If there's multiple setups or games in the queue, we can always just vote on the game we'd like to play.
Condorcet comes to mind. We could run an experiment with Condorcet voting. Condorcet generally makes everyone equally satisfied/content.
A problem that could arise would be if there were too many games in the setup queue. So if you have like 100 games, and they're each rated from 1 to 100, and the most voted one has a rating of 50, then the people playing it would be... content, I guess, but it would also result in people being more likely to lose interest in the game (it's boring!). I don't really see this being very likely, as I don't think we've ever had more than at most three games in the queue at any one time, but it's still interesting to consider.
I'm sure we can correct this by adding in another variable - "total amount of time I'm willing to spend playing this game/I will enjoy playing it."