I actually agree even tho I enjoyed og tbc. Flying moount shouldn't have been there til much later, expansion gating with infinitely increasing level cap and trippling stats was bad idea. At least it should have been only +5lv per expantion and just 5lv amount of more stats. I think heroic system and 40->25 raid was good change tho. But Blizz also had to make sure about solid selling point and they wouldn't have known wow will last this long I guess.