Thanks! :) It does seem to be a nice set of mechanics to design puzzles with - maybe the strong physical metaphor helps.
I’ve added another level using the one way gates, as my collaborator is keen on the idea (it’s probably a bit over the top, but I tried to make it interesting). It’s not something I would have come up with but I do think there is some charm/humour to trusting the player to think it through (as long as it doesn’t get tedious).
I think my problem with the level in the source was the current fan graphics make it a bit noisy - but I do like the idea of it, mainly just ran out of time.