Toxic player containment
I don't exactly believe in elo hell. Though I do believe toxic players can drag everyone in a team down, so I came up with an idea. What if there was a 6th level, below fifth that could be like a punishment from the tribunal. It contains people who have been punished by the tribunal for a a set amount of time depending on the degree of the violation.
This or something similar could work. It's not as serious as a ban and it allows them to keep playing, just keeps the normal players from having to deal with most of them.
(P.s.) I'm not in ranked yet so my opinion on elo hell should have absolutely no sway with you. Not that it matters because this isn't the point of the post.