I love games where the mechanics of the engine are part of the gameplay. When I saw your little video of 'what happens if you apply the ripple effect to land?' I immediately thought of how fun that would be in a fantasy wizard fight. Great cartoon violence potential! I've really enjoyed reading your updates on this project, because of your excellent writing as well as your technological achievements.
ISTM you have a great platform here that would be suitable for a wide variety of gameplay styles, which will attract other creative people to your project to help. Can't wait to see where this goes!