I have one teeny tiny suggestion: additional buttons to buy things in multiples of 10 100 1000 etc.
I PROMISE that is next. May even do a quick update with that. I want to make it so you can press and hold to make purchases, but I can't figure out how to do it for both mobile and PC, only one or the other.
It's one of my major annoyances, and is actively being worked on. If I can't figure it out soon, I'll do just that.