Seems like it could use more
There were some things I liked, like the spotlight moving around that you've got to stay in, and some stages with moving obstacles. Since you specifically asked for any things that might be done better, a stationary mouse-avoiding game can be kind of dull, especially if there's not even a time limit. The more innovations you can include in the game the funner it'll be: like having the maze scroll around through the viewport at a set rate that you have to keep up with (like if you're travelling down a tube) and getting faster and changing directions as the game goes on, or having stuff shoot at you from different directions with a few projectiles thrown in that you are supposed to touch to stay alive instead of avoid, or even having some short-distance teleportation that you can activate with the arrow keys.