Woah, I see I wasn't the only one who made a level editor! Congrats! It's pretty intuitive to use, and quickly gives satisfying results.
I really like the space this game create. Combined with the color evolution across levels, it's kinda hypnotic to fly through them. I always enjoy spaces without clear up and down. The movement felt nice, although I regret that bumping walls can be very punitive and discourage from going too fast. But overall I had a very pleasant time with the game!