I'm someone (one of few I feel sometimes) that quite enjoy DLC's. I think it's a neccessary feature to keep content fresh and the hype from the game up. I will admit that a map pack doesn't thrill me all that much, but I will buy it to support you guys. The job you have done with this game, as a re-make, how it's delivered, the communication you've kept with your community and the overall quality and replayability of the game is just fantastic. Easily one of my favorite games.
As said, I will buy this DLC to simply support you (and will naturally play the maps since I bought them anyway), but I do hope you consider some of the suggestions given in this thread as to future DLC content. I would be wastly more interrested in seeing new civs, new techs, new rare resources (super unique lizard mount for troops? Yes please), new quests, wildzones and events. I expect a few of these will be coming in the expansion, but why not give a little in advance. Possibly look into vastly unique civs that don't use any of the same methods as the other civs?
Whatever it is, you guys got my trust so I will be buying all your stuff