There's the stars, the money, the points... But what if there would be a way to do better?
I don't know how hard this would be to implement, but a suggestion is a suggestion anyway!
Custom variables would be numbers the game would remember, and could be called and modified with commands. What would these be good for?
Imagine you have a minigame of collecting chickens, as an example. You could create a variable named "Chickens", and have the game keep track of the amount of chickens you've got.
To take it even further, you could make the game ask "if" the player has collected 10 or more chickens, in which case something would happen.
This would make for a lot of new possibilities, mostly in the forms of collectibles, but the possibilities would literally be infinite!