Hi,
I'm not native english speaker so there may be error in the following text and i apologize.
-The box should be separated like I can have 10 pokés in box1 and 15 in box3 with box2 empty. Like any box should be independable.
-We should be able to release several pokés at the same times.
-We should be able to sort pokemon in each box from their number in pokedex or alphabetic order.
-We should be able to move pokemon from box to bow without putting them in our team.
-Naming the box could be great too.
Thank for ready you can pot other suggestion in comments i'll edit for visibility !