Really cool mechanic! slinging around is really fun, and the level demonstrated it well
I do wonder how the game would play if you weren't restricted by what you could grapple to? I like slinging around the most, personally, so if I could do that with less restrictions it might be more fun?
Also, if you want to stop the sticky hand from clipping through the floor, I think you need to use camera stacking/layers or something like that!