Looks interesting! Although idk what the rules would be, which element's "powers" would be prioritized? And again I think that such a small board may be too limiting to develop interesting strategies. But I'd definitely want to try this out!
I think the idea for this would be something similar to jokenpo, the problem I found converting the counted sides of the hexagon. But with so few options, the strategic part of the game would decline very quickly and I think it would become very repetitive?
