Glad that you thought the fall height upgrade things was a cool idea. It was a fun concept to play around with and I think it could play well in an expanded setting (though I think it may need supplmenting with something else, like basic combat or far more interesting platforming design). Took a bit of thinking to get my head around when I started designing, but it's good to hear that the level design worked out in the end.
I'll definitely have to consider iterating on this in the future to see what it can end up being with a bit more time and thought into a more expansive design. I think that this version got the ideas I wanted across, but I do have more ideas that I think would fit it well.
Thanks for the feedback!