Some of that is, yes, pure difficulty of programming. The game is very much at a point where trying to add more is likely to break things.
Hm. thought I rigged it where you can’t get the same character twice in a row. Will look into that.
I will look into the rest of the jank too, but some of it is just… this game is packed to the gills with features and exponentially more combos than I can keep track of.
You can rename a character NAME to remove them from the pool, but they’ll be replaced by a random story character when they would normally spawn.