OK so here's the thing. There's no denying the fact that there are a ton of toxic players who literally get triggered if you breathe twice in a row. How about an option to block such players, and when you block someone, the matching system will try to avoid teaming you together. This may not help you in the short run, but this will definitely improve the quality of teammates you get. As for the ones who get blocked all the time, they now will be suffering with higher queue times, and so will (maybe) want to change the way they behave. Also toxic players matchmaking with other toxic players would be a bonus. And believe me, it's not that rare to get matched with the same teammate more than once.