Hey, thanks for your detailed feedback. At first, I am happy you liked the game. I do absolutelly understand your remarks on jumping and moving a box. I just wanted to let the jump feel more realistic and not as cartoon like, but looks like i have overdone that a bit.
Not implementing the box pulling mechnic was actually my purpose, because with that I had another puzzle mechanic (not being able to push two boxes behind each other). But it would have needed to be more obvious to the player i guess.
The Limitation: This is ANOTHER puzzle mechanical aspect. Some of the levels are a lot easier, if you have endless changes. So I thought it would be more challenging to let the player experiment first, but then find ways to make the solving process as efficient as possible (with less changes) ;)