Maybe have 5 bans for each team?
I mean the amount of champions is rapidly increasing and pretty much everyone knows, by now that 6 total is not enough. This would also allow all of the team members to ban one champion and give 2nd pick a meaningful place as apart from the Red side, i see no point in that because 2nd pick on Blue side has no advantages whatsoever. No bans, no first pick.
TL:DR - 10 bans a game keeps these posts away.