Old SWG community and housing/bartering.etc but more refined
Gemstone 4 (MUD) skilled based + experience leveling
WoW raids and dungeons similar to TBC era + outdoor bosses
Open PvP with rewards that mean something
Post Apocalyptic similar to fallout 3, but not fallen earth style
WoW fluidity with combat
-A large fantasy-like world with an involving storyline
-Several unique/creative races
-Balanced classes all around
-Unique PvP & PvE mechanisms
-Internet references (Because they make everything better)
-Mounts (Flying optional)
-Dungeons and raids with a decent difficulty setting
-No revamps!
Of course, being F2P would be perfect as well... Though history taught me that most F2P games aren't very good, with just a couple of exceptions.