I also thought this would mix with the color choosing idea. If you could choose a certain spot, then it could also mean choosing a spot with a color that you want (if you don't want pink then don't choose the last spot).
It's really frustrating in a doubles tournament game to wait for a certain person's partner to join so that you can join and then your partner can join etc. so that every person is in the right team. So I thought of an idea--what if we could choose the spot where you ...