This jump is annoying because of the unnecessary tiles jutting down solely to block your jump. I think it's pretty obvious what could be done to fix that.
I followed some coins and look where it landed me. And then, it turns out, there were coin blocks...but I didn't know that. There's no hint that they're there besides coins I collected on the way down.
Mark them with something else. I legitimately thought I was stuck and killed myself the first time I played this.
Other than that, it was pretty fun to play but a bit too claustrophobic for my tastes. I'd say widen a few of the corridors more.