User blog comment:Deshiba/Ban champion X!/@comment-8802138-20130811183557

The suggestion is great, but i would limit the bans to 10. That means, you have to "allow" champs out of your 15 max bans if they exceeds 10.

This would limit the premade team bans (which could ban 15 champs each game) and trolling (when you banned ban-unworthy champs to troll your mates).

I think it also lowers the number of champs you need to play ranked, which is 16 atm, 40 with your suggest, 30 with mine. If someone is going full runes and runepages and has less IP for champs left, this will make it easier to play ranked.