Can you expand on what it means to be balanced based on skill ratings? Like if you want to 2v2 with your friend, could the teams get shuffled? Or do you just mean the +/- elo is adjusted to the rating disrepancy between the teams.
I feel like it would be rare to use this feature for something like a 2v2 aim arena. You can see who is in the server, so it will be a lot of people just trying to snipe games vs worse players.
I do think it would be nice to get wipeout games with full teams at similar ratings though, which does not happen naturally through MM.