Personally, i never like the idea of clans. Somehow, maybe it's my free wheeling style of playing, the idea of clans give me the impression that in some way, i have to adhere to some rules and regulations of a body, which i never enjoy
In the manner in which a few friends gather along and chit chat and stuff, I do have a "poot" channel to chat with my friends, even though we are nowhere near being a clan (though we do group quite often together for stuff).
And if clans are established, it will be interesting how it is done. And for quests, although sometimes a certain clan can dominate, there are some in which newbies can also lead for them (aka me) and get some decent help from other clans, i guess. It's not always the case where a clan dominates a quest, seldom anyway, more like on their abilities