The only limitation is time & money neither of which should be concerns for Blizzard given how much money WoW brings in.Twobit Whore said:WoW is as successful as it because it simply didn"t do what you suggest. Make a few things and make them really cool instead of making a bunch of things and being unable to polish them within the decade.
For release it is completely warranted to limit what you do and make it great. But here 3 years later the base aspects of WoW really haven"t changed except for PvP. PvP has expanded its feature set a ton and will continue to do so in WotLK. PvE, not so much.
Plus a lot of the features they could add to broaden the appeal of the game wouldn"t exactly be major coding complexities like PvP or PvE. They"d take time to do but they shouldn"t have major reoccurring recodes since they shouldn"t be effected by systems like PvE or PvP, ie things that are routinely getting adjusted. Take housing for example, once implemented it shouldn"t require tons of maintenance to keep it functioning.