I've played MMOs in my free time for many years and for me the biggest amount of pleasure has come from hanging with a really small group, like 2~4 people (close friends, husband etc) and just knocking out content where we could. A lot of fights were really fun and challenging and I hope that I can experience the same thing in 2.0.
Bigger groups seem to breed animosity; drops become such a cause of drama it's not even funny><.
It's like throwing a raw steak to a pack of starving dogs and expecting them to share. Totally not worth the trouble D: