Given that talents can be changed while in Arena/Matsuri screens, It shouldn't be an issue.
However, it's understandable for Ranked.


Thank you for your suggestion.

Not necessary, Matsuri forces the player to set a baseline team upon entering the cue.
It's the players choice to set up certain skills depending on the on a team they chose.

Same applies to Arena

Although I get the suggestion, it's a good one.