Interesting. During my earlier days of LemEdit 5-6 years ago (back when I created the LemEdit version of "If Only They Could Swim", which I do plan to release in LemEdit form eventually), I had a similar idea for a level, only on my level you have people climb up, then do the trick, and then build to go from one ____ to the next and then to the exit on top. (Sorry if this is a little unclear but I'm trying not to reveal Shvegait's puzzle idea.)
I haven't planned to release that level though because I thought the precision is too annoying (although maybe it's partly because of how I setup the terrain), but maybe I can throw it into a "cut levels" set sometime in the future. (Very far future, as I haven't even actually make the 10 levels I want to make yet.)