I look forward to seeing what the Classic server has to offer. They made some major mistakes IMO on designs after BC which I would like to see returned to the old system. Skill trees returning to the 3 tree mix and match is a big one for me. I liked the options it presented. I also want a return to the old Hunter Pet system where a hunter could go out and find rare pets and actually get bonuses for having them as well as having fairly unique pets from the casual hunters who didn't put time and effort into finding cool pets. So I guess we will see. At Blizzard speed we probably have another year to go anyway.