Physics
Physics is basically Gravity, Acceleration, and many more, it is appreciated in every game, and it will be utilizing it. It won't be excluded in Fancade, though, so you can be in extreme fun and joy by the sheer amount of enjoyable things physics does.
Also, Physics in Fancade are always gonna be the same thing, until you change the scenery, then it'll just recalculate the physics and be the same thing until you change it again.