I don't know about you guys, but CGI trailers just don't do anything for me. I'd much prefer gameplay. Really don't care much that we'll see 2.0's opening at E3 for that fact, unless it has some surprises hidden in it such as new classes. The weeks after the event will probably be more interesting, since we'll be getting more info from the dev team.

Anyway, the two big things for me are community options and zones. The former should've been in from the start (but hell, so should a lot of other things). Tying it into PvP, bosses (such as with the summon system), and other things is always neat. Helps to really push friendships and rivalries. The latter I really didn't care much for until I tried out FFXI and started running around there. Made me realize just how poor of a quality everything in XIV 1.0 was in that regard.