Hello, this is quite an interesting suggestion. How would you like this to interact for players that have already reached the max rank in arena, as the matching system changes quite a bit after this point.

Well, the issue with defining a certain team/usage as meta is that its used to define the most effective tactic, as that is included in the acronym. Would you say the most effective tactic right now is Obito Ten Tails Jinchuriki? Then those using Naruto would be unaffected? If we also include Naruto in the blocked list, then what about the next character? Would that character also be included? It seems like you want Zenith settings, which is already its own event, with its own set of rules, specifically for this purpose.