Comparision
When Vanilla WoW had its first "raid", MC was mostly broken, tanks easily one shotted, Fire Resist gear needed up the wazzo, Ragnaros was basically unbeatable as he would bug out after Stage 1.
Vanilla WoW had very terrible stat optimatization for Gear.
Paladin class was changed from a combo point system to the crappy seal system at the last minute with no Beta Test on the change.
Hunter's basically could auto attack and do top 10 damage in a 40 man raid.
Raiding a rival faciton's capital would cause the entire server to crash.
The server I was on was actually down unexpectedly for 2 full days during the first month. Blizz in turn gave everyone a completel full rested exp which casued most of the hardcore players to finish leveling the day it came back up.
Even after the PvP Battlegrounds were introduced, you would have to sit out front the actualy PvP battleground and wait for your queue. Usual wait during primetime was 45min or longer. PvP battlegrounds did not get better till after grouping queuing, change in earning pvp loot, and BG finder/queue tool usable from any major city.
There were 3 tank tree for 3 different classes, yet only 1 of them could actually tank.
There were 3 healing trees for 3 different classes, yet only Druids and Priests could main heal.
The list goes on, but that should get the point across.
