Hello there,
I've noticed that in the Friends menu, the characters I used for the weekly arena are still having the arena tag after I took them out of each of the four arena lineups as you can see in the example in the images.
Hence my suggestion is to just completely take the characters, which are in the weekly arena, out from being tagged in the Friends menu. It persists for the whole week until the weekly arena refreshes and we can't do anything against it.

nice game
). The problem is I don't know why they decided to put tags on them after we're done with the business of that team, far more they even created a special lock to inform us a certain character has been used in another stage, so it's obviously useless, and it makes the Friends menu a complete mess after I submitted all 4 stages. Anyone knows the main purposes of Party tags? I really don't...
That can't be called "priority for convenience"...