>>28412020A "battle box" sort of that lets you store and move mons between your main team and this one box, they don't get healed of course.
You basically carry this box around and can access it with a couple taps like amie and stuff, then you can swap around pokemon between regular boxes and the battle box.
It would let you train stuff a lot easier, lets you switch around eggs a lot fucking faster, etc, I don't know why game freak hasn't added something like this, the actual box system has improved a lot over the years but the method of accessing them is just as outdated as it was 20 years ago.