Since the only thing you can spend on tc is on cosmetics for your tori, there should be item power-ups in the game, example:
Tori-Shoes
-Increases the gravity of your tori by 1
Brass knuckles
-Increases point damage by 1
etc. etc.
but, I see a lot of people complaining about unfair disadvantages for people who don't have the amount of cash for the items, so they should have a server option to enable powerups or not.