Glad you liked it!
I did originally have an idea for a chaser that didn't need to bounce off walls to change directions, and another idea for an obstacle that moved in a circle instead of a line, but I wasn't sure how to design levels around them.
Knowing what I know now though, I probably would have redesigned the maps to lean more heavily into using the mouse control for precision navigation. My main concern was the mouse movement control scheme being too alien to players, but it seems like that wasn't really the case. I designed all the levels to be beatable with the alternate control schemes (on normal mode anyway), but since neither of them really match the absurd combination of speed and precision that you can get with mouse control, using mouse control makes the first few levels of the game ridiculously easy.