Premade stoping PUGs arent fun. its no challange and no thrill to win.
And I dont want to be relying to a team when I want to pvp. It takes time to find a Group and it takes time waiting for a pop as it is today. And I like to switch between quests, flashpoints and pvp as I please, I dont want to be tied to a team and do as the majority of the team wants, I like to do my own stuff when it pleases me. All MMOs ive played have fixed this, except SWTOR, that lacks the freedom of choise, where you are supposed to be tied into a team and have no free will at all, just foloow the herd where it goes.