I would also love to see two options for formation. The current one, which would serve as the Odd Number focus. But I would like to see another one that is an even number focus. There would be no center essentially, just two leads.
Also, I think it would be awesome to be able to assign each Idol a position within the group. So things like Visual, Vocal, Dancer, Rapper, etc. Each position could give a different boost or something?