Suggestion: Draft/Ranked - Five bans
With 120 champions in the game thus far, and tons more coming (MORE MAPS, LESS CHAMPS), three bans per team is NOT enough.
You want to ban Tristana or Lucian? Fizz or Morgana? Nasus, Jax, Xin, Eve, Lee Sin? Well, that's too bad. Pick 0.025% of the champions available and you only risk playing against 112 other champions that you hate.
Because banning and champion select phases can potentially take FOREVER, letting summoners ban more than 3 total will add more and more time onto this. Well, I have a solution for that.
Within the profile page, every player should get the ability to pick three champions to be auto-banned. The champions with the most votes are automatically banned.
But what if all five people all have different votes? That's easy: They are automatically picked at random from the five summoners' choices.
This should happen automatically, before banning begins.
Another alternative suggestion would be to have a list of those champions presented to the team -after- banning is completed and let the five vote. The two winning votes get banned.