Thanks a lot for trying out our demo and your feedback is so important to us!
So, about what you mentioned, you're totally on point. The thing is, our full game has more gameplay mechanics that we didn't include in the demo. Adding those could make things a bit complicated with all the keys involved, potentially making it uncomfortable for players.
But don't worry, we'll definitely take your feedback into account when we're polishing up the final version of our game.