SM/USUM Battle Tree - Multi Battle Partner Customization

[Salamencite]

What if you could go into you sd card save, or even better, on your system, and change who your multi battle partners are?

Personally and many others either don't have a second 3ds or don't have any friends to play the battle tree with. I am getting sick of grinding super singles well beyond 1 thousands wins in a row and not being able to find a trainer set up the way I like.

Ideas for how you could customize would be, being able to manually change what order of the pokemon your partner trainer has from the list that trainer is allowed to have or if it's possible change it to a custom mon of the users choice.

I am very bad at hacking in general, let alone programming and coding, so if someone could help me make this a reality I would appreciate the help.