It would be cool to have a DLC/Scenario (could be free or for a small price) that is set within a single Era that has you playing as one of the traditional B-rated horror monsters (Mummy, Vampire, Werewolf, Frankenstein's Monster, etc.) Your units could be skeletons or zombies, and the whole thing overall would have a spooky Halloween vibe to it. If nothing else, it could give Mod developers some new models to work with for more fantasy-centric settings.