I love the new random dungeon finder, for example. If you don't know, it allows you to randomly group with 4 others across servers similar to BGs for dungeons, and people choose what role they want to fill (ie tank, dps, heal). I've been having fun with that since getting a group together used to be such a pain, and I've already done about a dozen random dungeons and only wiped once.
The thing also is CF is getting a little bleah for me so needing some distraction. Finished Civ 5, Fallout New Vegas, SC2 got boring, so on to the next thing. MMORPGs seem like the only thing that can hold interest, and of course, nothing beats P v P.