Thanks a lot, I'm very happy you like the level design. I was a bit surprised that even with such a simple mechanic there are different puzzles possible. So I thought of adding a simple level editor in a future version that allows exporting and importing levels so you can make your own and share. I'm curious as to what designs other people might come up with.
Of course there's not much of an audience as of yet, but I'll probably do it anyways. Plus I already have some more elements in mind that would increase depth and variation.