DR was never intended to be a tactical wargame; it's more of a strategic game, particularly in diplomacy. Glenn's optional rules for tactical combat expanded DR's parameters, but hardcore tacticians prefer even finer detail to warfare--infantry, terrain, archers, all that stuff. (Because, after all, a game of DR wings by faster than checkers, ending before you've even opened the bag of pretzels.)
Has anyone been able to smoothly attach a tactical system to DR with rules from another wargame, your own rules, or some combination? If so, please share with us your experiences. Especially welcome would be systems that account for Minaria's multiracial composition.