Should bans be increased to 5 per side?

With 128 champions and growing, should bans per side be raised to 5 bans? The whole purpose of bans was to help prevent counter picks, however most bans now are just used to ban out what most of the community feels are unbalanced champions, leaving no room to ban counter picks. With so many champions to choose from, the number of seemingly unbalanced champions is growing. I feel raising the bans to 5 per side would allow some players to actually be able to ban a counter from time to time as well as making players dig deeper into their champion pool. You may also see an increase in champion sales if people are having to go deeper into the pool. 3 bans per side does not feel like enough when there are so many champions available.