I didnt really have any specific ideas, but thats a fun thought. Maybe a few more varied noises or burps added to this?
Also, maybe a music option. Either more tracks or lowering the music. Only other potential thoughts would be some changes to the animation, maybe more struggles within her belly the more blocks that aren't broken, or visible rumbles when you do a combo.
But I wouldn't mind seeing another Tetris vore/stuffing game based on your own characters or other franchise you like.