Not reading all the posts. But ima put my 2 cents in

Personally I hate mmo today with the solo focus. One thing that I get bored is playing by myself which I feel is counter productive to an mmo. More so if there is a certain community level requirement to join the guilds. Like WoW was mostly 10+ where Aion was 25+. I don't mind a few options for solo'ers, but a good majority of the game should be group even if its 2-5 more players. I Say this because how do you build a server community if everyone plays by themsellves unless forced to? You don't personally. There are alot of large scale rpg. Like elder scrolls 3 and 4. Plus skyrim coming out. Then you got 2 worlds 2. Fall out 3 and 4. And these games have addons that increased the already huge world. Not much different from mmo.

If you focus on too much solo. It can get boring for those who like grouping as no one will want to group up. I like being able to socialize and group up with ppl to level and quest. And ya sometimes I do like to go solo.