Hey, cool game, nice unique concept and good puzzle design! I beat the whole thing and it was not easy lol. I had the ball go into freakout mode a couple times, maybe you can add a max speed to the ball so it can never go out of control?
But regardless, I had fun. Nice work!
P.S. I loved the idea of choosing where to put the door. I think that's so cool. I say stick with this one!