User blog comment:Deshiba/Ban champion X!/@comment-5001455-20130812221354/@comment-4022742-20130813093022

Statistically 10 bans would be right where it was at the start of ranked play. As when we started we had 42 champs and 4 bans, that's roughly 10% of the champion base. Now we have 110+ champions, if we'd have 10 bans that would be, well what do you know, roughly 10% again! Marvelous.

And where does everyone get this 15 number... -_- I suggested giving everyone 3 preferred bans in their summoner profile, when 5 players all want amumu banned, you'd have 9 bans left. Some champions will be so ban worthy that a lot of people will not want to play against them. Overlap would happen, leaving you at 3-15 banned champs MAX, but more likely 6-12 bans.

And those bans would be 1 sided, meaning they don't apply to your own team...