Interesting. This is somehow addictive.
Despite how simple the prototype is, it made me imagine a platformer where you can actually see and tweak the parameters for jumps, attacks, shooting, etc. It could add another layer of control.
It also reminded me, in a good way, of an ancient game I played on a programmable calculator sometime in the '90s. You entered the amount of fuel and the engine thrust vector, then pressed "run" to calculate the rocket's next position during landing.