Can we have an auto-balance option in custom games?

Would it be possible to add an option (maybe a button?) that would take player's hidden elos for the relevant map into consideration, and balance the teams that are about to participate in a custom game?

Background: Because of the way draft-queue in Dominion was killed off, I started encouraging people to join custom games every Monday that would enable us to play Draft matches of Dominion. This past week we actually had great participation, but had the unfortunate downside of teams being ridiculously unbalanced, due to huge variations in the player skill-levels.

Once the game is filled up, it'd be great to be able to click a button and have the client automatically swap players between the teams to balance them as much as possible. I'm sure this could come in handy in custom games of the other map modes as well.

Thanks!