A Question about fan made content

I saw on the “Fan made” section, there were “Mods”, like a new outfit, and the like. Are mods limited to just reskins, or can someone ask for Quality of life improvements to the game, such as makeing the pokepon take money, so we don’t have to waste our time running around like a headless torchic for 20 minutes? (While still being able to legitimately acquire the rewards.)

new outfits would be simple sprite additions/replacement, while changing pokepon’s function would require changing the code of the game itself.

And it’s against the rules to alter the code, is that right?

It is.

Darn. (Understandable though.)