On a couple of occasions I've run afoul of someone in a party who wanted to take the lead and pretty much kill everything single-handed, but hadn't said anything about that when I joined the crew.
I've only ever played one MMO before, and about the worst possible sin one could commit would be to stand there and do nothing while one person did all the work.
People who did that were called "leeches", and no one wanted to be called a leech.
Still, having one really strong player effectively carry the rest of the party seems pretty common here, and that raises a couple of questions, (aside from the ethics of contributing nothing to a group, which kinda bugs me)....
1) If the guy who wants to do all the work doesn't tell you as much from the outset, how the heck are you supposed to know that's his plan?
2) Doesn't standing there watching while one player plays and the rest watch kind of a) mess around with the whole levelling/skill-building concept? I mean, sooner or later, you're gonna have to stand on your own, aren't you?
And b), take a lot of the fun out of playing the game? Personally, I'd rather have it take longer and maybe die a couple times, but actually *play*, and feel like I contributed to the crew when I do a dungeon.
Is there anything like a "Party" Forum where people put together crews of like-minded individuals, and thusly avoid the unpleasantness of having someone called out for not playing the way the leader wanted them to?