okay, ngl, Isometric platforming isn't what I thought I was getting into, but I'll be a monkey's uncle if it isn't actually REALLY fun.
This makes precision platforming in a 3d space really easy and enjoyable.
If I could offer a recommendation if you return to 3d platformers in the future: A drop shadow would increase usability exponentially here.
This video does a pretty good job of explaining how to do that:
Either way though, this really is a solid proof of concept, and I'll openly admit to wanting to steal the basic premise to use myself one of these days :D