Has there been any consideration to putting the CC series on steam? Or putting the new game to be greenlit on steam? I think there is a lot of potential to bring in way more sales if the game was released there. I don't know why you wouldn't. There are plenty of people with fond memories of CC that have probably forgotten about it. Put it up and steam and I think you could generate a lot of interest.
Hell, if you need the resources to get to that point, make a kickstarter. If it meant the possibility of >2 player MP or especially co-op, I'd donate to it.
But at least steam, at this point in pc gaming I feel that is practically a requirement. It would definitely be the only realistic way to generate any significant number of new players. They rebooted Age of Empires II, AOE III, and Age of Mythology on steam, and from what I can tell they've done very well, and all they did with those is raise the resolution and remade the multiplayer. I see no reason CC couldn't enjoy similar success, especially with the new 3d engine and a updated multiplayer.