Suggestion for ranked play and deliberately losing a game

I have a simple suggestion that I think will clean air in ranked matches. - Deliberately throwing a game ( losing on purpose) that is provable, reportable and clearly visible should automaticly result in ban from ALL ranked games during THAT season. Not permanent ban SEASON LONG ban from ranked games. And I am not talking about doing bad in game or being angry flaming , dc'ing or going afk, the usual stuff, I am talking about people that will deliberately die repeatedly to lose a game and flame team top of it. This is pretty easy to check on score and video records the games now leave. They should be blocked from ranked play for that season if that penalty is valitated.
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