For some weird reason Warlock used to be underrepresented in vanilla WoW. However, the least popular doesn’t mean that they were bad. Warlocks had amazing damage and some truly unique utility abilities allowing them to summon players or create Healthstones for the whole group. Similarly to Hunters, Warlocks were amazing for solo players with the ability to summon various demons to help them.
Step-by-step class guides are on the way!  The 1-12 Mulgore Guide is the first guide to get all the individual class steps.  At the top of the guide, simply select which class you are playing and the page will dynamically update all the steps in the guide for that class (both text and images).  The rest of the guides will be slowly updated overtime to include all the class steps, but you can see how it's going to work with the 1-12 Mulgore.  I want to thank crazyK and his Placeholderguild for helping me out with the individual class content.  They are allowing me to get the 1-60 Alliance guide done while also getting all the class steps done at the same time, so everything can be ready for Classic launch (hopefully).
The fact that Cookie's Tenderizer from the Deadmines had +3 instead of +2 strength. The fact that the Stormwind south bank had one instead of two mailboxes. The fact that Jaina's Proudmore's name was "Jaina Proudmore" instead of "Jaina Proudless." Stuff like this isn't what mattered. It was arbitrary. If Cookie had dropped a shield instead of a mace and Jaina had been named Susan, nobody would have cared. It wasn't specific details like these that caused us to enjoy the game.
I wonder if they’ll execute this similar to Jagex does OSRS. Let the players vote and once all phases cleared and of articles have been introduced, vote new WoW Classic articles to be inserted. There are a couple large ones that I think should be changed, like warrior taunts being able to miss and certain classes only being plain unplayable. Changes could correct a number of the issues that are bigger, and eventually the player base will quit seeing these things and just become irritated and need them to be fixed. Give everyone a couple of buy classic wow gold months of nostalgia that is pure , then resolve a number of these things. 

Within the context of Classic, the method most frequently proposed is to re-tune bosses to make them harder. Rather than copying the numbers, re-create the relative difficulty. Kind of like, when you first start working out, you use small weights. When you get stronger, you lift bigger weights. The WoW community is more knowledgeable, more experienced, has better hardware, etc. We're "stronger." So give us tougher bosses. There are a lot of forms that could take. Bosses were constantly re-tuned during vanilla anyway, so if Ragnaros does 10% more damage or something, is that really a problem? I don't think it is. What about resistance gear? back in the day, collecting resist gear was a thing people did. But the numbers and strategies are so well known today that only the tank really needs it anymore. Bosses could be re-tuned with more resistible elemental damage so that's important for entire raids to gear appropriately. That would be entirely keeping with the spirit of vanilla even if the actually numbers sitting in a database somewhere were different than they were ~13 years ago. If you want to go a little farther, a few people have proposed adding new abilities to old bosses, adjusting their timing, etc.
Furthermore, we highly recommend you plan in advance regarding the class that you want to play. In the Classic WoW, there were no class specs. Every talent point spent couldn’t be changed without first resetting all of them and the talent point reset was a costly practice. If you already know what you want to play as in the end game – try to develop your talent tree accordingly. This way you’ll be able to save a lot of gold in advance.
Nov 15 Classic is too easy for 2019 playerbase I'm not big on gameplay changes, really I'm not but... The game is just too easy for today's standards. I really think some of these raids and instances need a serious increase in difficulty. MC is a joke, most of the tier sets are unbalanced, and a lot of seasoned players agree but fear the toxic Classic community to speak up on this issue.Hopera237	Nov 15 

I am not, generally speaking, a conflicted or complicated gamer. I do not buy tons of titles. My Steam library is not stuffed with hundreds of games I’ve paid for but never played, apart from the ones I use for benchmarking. Hilariously, this means I have thousands of hours logged in a few games I’ve never actually started, but relatively few that I purchased for the purposes of playing and didn’t play.

Nov 15 We ordered vanilla not vanilla with sprinkles 1. Sharding/Phasing was not a part of the classic experience. The launch surge and often times overwhleming population fighting over quest mobs and loot was impactful on a human level which brought people together to make parties so they weren't fighting or made people bitter rivals. And that ten minutes you spent competing with people to loot that bucket before it despawned for another few minutes was intense. 2. Loot trading was not a part of the classic experience. Ninja looting was a real thing, a crime you could commit which united the community up in arms against you, blacklisting you. That's a feature for modern WoW, not genuine classic. This is a recreation. Not a remaster. Not reforged. We ordered vanilla, not vanilla with sprinkles on it with modern hand holding baby coddling streamlined bogus. That's more suited to your modern WoW playerbase, not the millions waiting patiently for the game they knew and loved over a decade ago. I don't want to sound like an entitled brat, but when you advertise a product, don't change it behind the scenes. Please Blizzard, don't add these things. They kill aspects of what made classic wow such a special phenomenon that rallied people to make private servers in its honor. I'll go play one if this isn't authentic, because those unofficial servers would be more authentic.Rhystael95 Nov 15

HOWEVER, I did find out that there was an exploit to get around it (one of those rare exploits where you would WANT a bit of lag). Basically if you spammed “X” to sit/stand/sit/stand, then if a mob hit you while you were sitting and right as you were standing up, then it would register as a crit, but on the server side you would be standing, thus allowing the ability to proc.
There’s the reason why some players used to call the game World of Roguecraft. Rogue was one of the most popular classes in classic WoW and there’s a good reason for it. During vanilla, Rogues topped DPS meters in raids and dungeons, but their main strength was world PvP. Rogues could stealth through enemies avoiding unwanted engagements with the opposing faction. Additionally, a huge variety of crowd control abilities and high burst damage made them the worst nightmare for the cloth-wearing classes. However, Rogues were in a bit of disadvantage regarding end-game gearing since most of their gear pieces were useful to other in-game classes as well.

Nov 15 I Don't Have Time To Reach Rank 11-14 I Don't Have Time To Reach Rank 11-14 and this is perfectly ACCEPTABLE! I actually like the fact that rank 11-14 is extremely hard to get and time consuming. I don't care if it's not about skill, it is very RPG feeling in the fact that, the people who put in the most time and effort spilling the most enemy blood are the ones who get the best rewards. as somebody who will NEVER have a chance of getting those ranks and items because; 1. I do not have time to do it 2. even if I did have time I still wouldn't do it because I mentally could not farm BG's that many hours for 3 months I support the PvP system and think it is great, and acquiring the hugely powerful items is a big reward and a status symbol. in Classic WoW the game is less about YOU and more about your guild. even if you are not the person to get rank 14, or a Legendary item it still feels awesome when your guild mates get them because it will make your guild stronger. LOVE IT!Agonyy107 Nov 15
To fully understand the interplay, consider terrain. This includes the placement of hills and valleys, trees, buildings, and more. When hooking up the old terrain data files to the new modern game system we realized that the way the system looked at the shape of data was different. This resulted in the updated system and classic data not aligning, resulting in weird issues like Kolkar campfires underwater or burnt-out trees from the Cataclysm era appearing in the original world.
Some even more advanced gold makers might also attempt to monopolize the market. It’s fairly easy if you have quite a bit of gold – just buy out every single item on which you want to have a monopoly on and then reintroduce it to the auction house with your new (and higher) price. However, it’s worth mentioning that monopolization tactic is risky business practice. But where’s high risk – there’s high profit.
The Horde 12-20 (Barrens + Stonetalon Mountains) guide has been rewritten and revamped.  In addition, there has been numerous tweaks to the speedrun route to make things faster and easier to follow.  Also, in case you haven't noticed I am now adding about 40% more info per step and redoing all the images.  Unlike with my previous vanilla guides, I am now giving a brief explanation of where to go and what to do with each step along with any other helpful tips.