I've been in multiple champ selects where someone hovers a champion, and I or someone else bans it. It's pretty easy to miss.
Maybe a message could pop up informing you that you're about to ban your teammates champion pick?
"You're about to ban a teammates champion pick, are you sure?"
Yes No
Something like that.
I think a notification would be nice. Most players really don't pay attention at all in champion select. I frequently ask to trade champions with players and most of the time get no response until they are about to pick. They usually say "sorry I walked away" or "I was in the bathroom" or something to that effect.
I think this speaks more to the larger problem that champion select is a pretty long process and that players don't like waiting around until they have to be present for their picks or bans.
