Love the game :D Sorta reminds me of some of the puzzles from baba is you. I think there is room for expansion, like pushable objects, but it then might end up looking like a baba clone... So maybe it is best left as this nice minigame (I think this could be a good mobile game as well though).
Also, do you have a Twitter for game dev? There's a lot of people there that would follow your work/s.