I would like to tell something about fights. When you fighting in DD there is almost only a math which decides you'll win or not. There should be some random stuff during fight as well to do it more exciting. I suggest that every 5-10 standard hits there should be a random SPECIAL hit done by monsters or a hero. Something like: CRITICAL hit (instantly kill a monster by you or leave you with 1 energy when monster hits you), MISS (you don't take any damage and so monsters not) and WEAK hit ( you losing just some % of base damage ;monsters as well when you weak hit it).
This is the idea. Please check it out. I hope it can help to improve this awesome game

. And sorry for my english (i am not english).Regards.