Ok I did without cheating. Its was very fun. Ignoring shortcut. I give this 4. I want you make another same type of level, but no shortcut and cheatproof, for 5 stars.
It is good. Try adding more paths that lead to dead end and make it like a maze. That would be more interesting.
I didn't find the short way, but I enjoyed the long way, . It's fun to keep reusing that big rectangular frame. It does look a bit unfinished in some ways. The slider rails could maybe have something on top of the bare ends. Also I feel it might look more appealing with the whole thing raised up on a platform rather than sitting on the white surface, .