The closed beta for Blizzard’s upcoming World of Warcraft vanilla server option launched on May 15th, and Blizzard has now listed some of the apparent issues that the development team is aware of, including class and combat related issues alongside missing textures and more. Blizzard mentions that this list is not a complete depiction of what they’re aware of, but a sampling of issues they believe players may encounter on regular basis.
Players will start from level 1 and will progress through level 60 with real, Blizzlike x1 rates. Old PvP battlegrounds are: Warsong Gulch, Arathi Basin and the famous 40vs40 players Alterac Valley where battles were known to last more than 24 hours. 20 and 40 man raids will be available for Molten Core, Zul Gurub, Blackwing Lair, Ahn'Qiraj 20 & 40 and the original Naxxramas raid in the Eastern Plaguelands.
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.

Nov 15 5 reasons I'm doubtful of WoW Classic I played WoW from patch 1.4 until Sunwell. And I'm not convinced on Classic. 1. I understand nostalgia for the gameplay, and it was a great game, by I don't get why people would want the old graphics when it looked outdated back then. Someone will level a warrior or rogue at snail pace and those 2004 boring graphics will reinforce his perception that the game is bad because it looks bad. 2. The lack of a second talent tree. This was the most demanded feature and I don't see people sticking with the game without it. 3. This has always been in the game, but weekly resets, I never got it, let people able to reset raids. Maybe have a 2 hours cooldown, but if a guild wants to farm a raid every night, or twice on a sunday, or farm the first 3 bosses of MC, let them. Gearing 40-60 people with weekly resets, in this day and age, good luck. 4. Dungeon finder, not sure people will like that, again bad decision. 5. The graphics, no seriously, this is bad on every level of game design, it just make the game look worse, a straight negative with no benefit.Pekuakami24	Nov 15

So even though you can play a WoW Classic demo today, we’re not done quite yet. We have lots of capital city features to look at, such as banks and auction houses. We need to test our dungeons and raids to make sure the bosses’ abilities all still work correctly. We need to examine all of our PvP systems. But we’re committed to taking a close look at all of these and more as continue bring the classic game back to life.