Whats one quality of life feature you want for Pokemon Za

My personal pick is customizable mega stone holder, which can be peronalised for each Pokemon,taking inspiration from anime.

There can be ways of holding a mega stone, maybe even cutsome for Pokemon and many ways to wear for a Pokemon.

And then custome way to wear key stone too. Like Bracelet(Default),pendate, headband or any other way like done in the anime.

Which sort of quality of life features like this you want?