I'm actually glad to hear that. This game is designed to be a foddian platformer, so I took that inspiration from games like jump king, so the player not being able to move in the air is meant to be an extra layer of difficulty to the movement.
I see, I'll take that into account, maybe I'll make the crumble platforms a bit smaller and darker, or brighter. White highlights on the spikes isn't a bad idea. I have a similar highlight on an item later in the game.
The smaller spike platforms are intentional. In some instances, having too large of a spike platform would ruin the flow of the level, but no spike platform at all would lead to players performing shortcuts that were too easy and obvious for my liking and that weren't accounted for. So I shrunk some of the spike platforms so that players could get past it fine, but not allow for unintended and undesirable shortcuts, or players getting onto or in areas they weren't supposed to be.