Increase the number of bans per team to four

I have been playing since season season 2. and late season 4 and throughout season 5 a lot of hyper carry champions have been introduced. Champions that would often find themselves banned. With 128 and another one on the way my question is at what point will you consider enough is enough and increase the number of bans that comes with the increased number of choices.

This is something that I hear a lot of people agree with and I am mainly curious as you are implementing a new system for champions, so it seems like now would be the ideal time to make the change. Or at least a time frame with season 6.