Under embems an option to vote which team you'd rather be assigned to.
In order of preference.

1. ____
2. ____
3. ____
4.____


and a black list for teams you don't wanna join:

1__
2__
3__


and for the winners of the emblem contest – a guaranteed option to get to join the team they designed the emblem for, just because they got no other reward. Maybe give them a unique border too, like to signify they are the leaders of that group or something?