There is 0 necesarry reason for it. If you don't want the new champion in your ranked games, Riot should prevent new champions from being in ranked. But having someone ban your champion, intentionally or not, sucks balls.
PhDs Nuts2 votesAgain, no. You could just hover broken champs and prevent your team from banning them. If your 5th pick wants Rengar, what are the odds he actually gets him if left open?
Can people stop making this thread yet?
Arakadia1 votesWhy would I purposely prevent my team from banning a champion that is broken?
Timethief491 votesCause 
Arakadia1 votesThats like the most boring, meakist, least common form of trolling.
Timethief491 votesThen Call it griefing. Some people are evil and will always be
Edge of Daybreak1 votesIf riot ever makes a change like this i'm making my pick intent yasuo every game.