So after some "debating" with Torrid in a different thread which shall remain nameless I decided to make this thread.
So that made me curious what aspects of games really draws peoples interests?
For me here's a list of the things I loved from the MMO's I played.
WoW - Instances, quest based leveling, UI, addon support, professions seem better then most but it still leave a ton to be desired.
War - BGs, and outdoor PVP are probably the best I have seen in the MMO's I have played, the guild system was great, Rift borrowed heavily on that
Conan - The combo system of combat was well done, the ability for guilds to build keeps.
EVE - The nigh infinite skill system was great
That's what I can think of off the top of my head.