Option to prevent teammates from banning other players champs.

So I have seen countless games that players during the Declare champ select session, will pick the champ they want to play, to only have someone on their own team ban that champ. Then creates a rage fest and negative experience all together. or forces a dodge for longer queues etc.

I would like to add a suggestion to Riot. Would you please make it so that someone on your own team, cannot select to ban a champion that has already been Declared by a teammate that they want to play. This will prevent troll bans from people not liking certain champs etc. It will have no effect on if enemy team ends up banning that champ etc. But it will prevent players from banning champions that the teammate would like to play.