Thanks for your post.I'm glad this wakes up the creativity of people ;) I created this for teaching so this means I'm on the right track.
My goal is to keep this simple. More simple than eg bitsy.
Quick answer : I don't plan to have multiple rooms (but maybe extend the current grid with 2-3 hidden rooms). HP system : I want the fight system to be easy and simple and without the player dying or loosing and still thinking about how to do this.
I will create a devlog with thoughts about multi screen and HP/fight system .