Just one more suggestion. Since this is a tactical game, I think that it would be beneficial to implement some of the DMG variant rules as options (either base game or as a toggle in settings like the difficulty options). There are 2 that I think would add to the combat oriented nature of the game:
Diagonal Movement: In the DMG, there is an option to have every other diagonal square cost 2 squares of movement. This allows for much more accurate geometric movement and makes it impossible to "cheat" extra movement by moving diagonally. For example, your first diagonal square you move 5 feet, the second costs 10 feet. This isn't perfect, but it does make movement much more accurate than diagonals costing the same as horizontal/vertical movement.
Flanking: I don't think that I need to cover this as I've seen it in here before, but I do think the flanking rule works well in a very tactical game.
Loving the game and I don't mean to criticize, but I do feel like having some of the DMG variant rules as options in the settings menu can really add to the D&D feel.