It’s a really cool concept, my only real concern is how much more you can really do with it? Though in fairness I’m pretty inexperienced in puzzles, so I really don’t know how much you could do with it. I’m sure there’s something you can do with adding more mechanics to augment the main level design, maybe something like an enemy that has similar death mechanics to the player, or some kind of switch that needs to be held down by a past life? I dunno! There’s certainly some potential!