The completeness of the game is just unbelievable, I like the art, visual effect, and music; you even have a starting animation for it?! So potential a project, hoping you could keep working on it.
I do find the rolling part unnecessary, it seems all I need to do is keep rolling untill I get the side I want, which turns the rolling from a flavor to a redundant action. Also, I believe the game Shogun Showdown can inspire you a lot, the battle field is quite similar as yours, but with different mechanics and dimension.