I really like how big these levels are. One thing that you might consider is that the white umbrellas don’t seem much more dangerous than the normal traps that summon wind. I wonder if they could be uniquely dangerous somehow. Another thing you might consider is, because there are so many levels and the levels are so big, perhaps the player gets to save their progress at some points.
This live stream talks about how you can save and load game progress if you’re interested: