That is some fantastic feedback! Much for me to go on for the next update, likely it's last too, but I do plan on adding some more tile types to spice up the gameplay. Although technically there was a punishment implemented for not using all the bounces it was easily circumvented in ways I had never thought off...shows how important playtesting is, right? Anyhow, it was my first game jam and am quite happy with the fact that I got something finished.
The (de)activation of walls mid-play is actually not intended, however, since you and an other user both really liked this I will investigate whether it can have a place within the game. The problem right now is that you could technically just loop until you have x bounces left and then take an easy route. Although it was intended for players to find alternate solutions, this is not how that was supposed to be done. But, as I said, I will try and see if I can make it fit within my design. Could you please elaborate on the "allowed for more fun paths." part, as I want to know what made it more fun :) Thanks!