Add an Alert for whenever someone on your team is about to ban your pick.
Extremely tired of my pick getting banned and then the person who banned making some excuse like "didn't see" blah blah blah. One point of the new champ select was to fix teammates banning other teammates picks. You can't stop them from banning but you can alert them to whenever they are banning a teammate's pick. This also separates the real trolls from the people actually playing the game. They have no bullshit excuse if an alert is implemented.
Edit: To address the concerns in comments below The notification can work like the first afk check to get into champ select (it's timed). There is actually a buffer time when it the timer hits zero to quickly make ban (or just my lag) so you can make another ban or just ban that champ. Obviously, there are no penalties to banning a teammate's pick except banning his/her pick.
The notification can pop up saying something close to the following: You are about to ban a teammate's pick
Option 1: Continue (bans that champ) Option 2: Cancel (does not ban)
Would be fair to stop the timer.
As for banning a champion they don't want to go against. A. if teammate is first pick they won't go against that champ B. A trade can be worked C. Hope for the best
I understand people banning my pick if I'm last pick. What irks me is getting my pick banned as first, second, third pick.
If rito implements the new alert system, it will help with the panic and accidental bans. The notification won't force you to not ban that champ. It serves its simple duty of alerting that player.