Why do I mention clans...because when clans play eachother, they care (somewhat, at least) who wins. It's not that they are better, but they try harder and work as a team, and can keep from having one or two game-breaking feeders.
And I'd say Zubs is pretty darn skilled, for the record.

And yeah, it may help the dominant team, but one or two feeders could seriously harm your team, and I like games to be in the hands of the skilled players.