Can we remove the ability to ban a champion another player on your team has already shown?
Of course I understand not having the bans work only one way, banning your opponents but allowing you to still play it, but even still you often get players accidentally banning other player's champions or troll banning, which leads to the classic "flash+ghost+run it down mid" type of attitudes. I play a fair bit of AP Kog'Maw mid, M7 without more than a single AD game, but I still cannot show Kog'Maw pre-bans because about every other game someone will attempt to ban it out from under me.
Simply make the champion unclickable in the banning phase if someone has already locked that champion in prior.
Other thoughts on how to fix this issue? Please share, and keep it civil!