The best uses of tricks like this are as alternative routes or shortcuts.
My advice is to have an alternate path that less experienced people can do... levels that are just plain hard can be a pain, but clever design of alternate routes is what can bring real interest to a level.
So you want me to do something impossible and something that is a once-in-a-lifetime chance in one game, and finish too? That's a lot to ask for! If you do this then I might try, but only then. In the meantime, VOTE!
I've just noticed that all the standard levels now have new textures/layers and look amazing. Sz must have gone back through every one to add this detail. Great job