You know what, the thought just struck me for DoW 2, they have the framework to add as many races as they want right, why not instead of releasing the framework independently every few months, develop the races for the root game.
For example, 10 bucks a race right, the basic Dow 2 comes with Space marines, Chaos Marines, Eldar, and Orks right, 10 bucks gets you Imperial Guard, 10 bucks gets you the T'au, 10 bucks gets you the Necrons, 10 bucks gets you Tyrranids, 10 bucks gets you SoB, 10 bucks gets you the Dark Eldar, ad infinitum.
After that you start releasing campaigns for 15 bucks a piece, so for example you can offer a Space Marine campaign, an IG campaign, a Chaos campaign, etc.
IF they make the armies buildable in pieces (like the tabletop system) per squad, then you would simply be unlocking new pieces per army. after X amount of completed campaigns for a particular race it could unlock specific units for that faction (or as a bonus for completing that campaign)
It would be an effing goldmine and probably the pinnacle of DLC.
You could also release Race Packs on DVD for 30-40 bucks including the race + 1-2 campaigns for DoW 2.
It would make the modders rejoice as well at the modular design, allowing pieces to be unofficially added to armies or even make their own unofficial armies making every single 40K nut in the world happier than a pig in chit.
For the mod packs, you would not need an authorization key to install, but the official ones could still prompt for an authorization code for each race, or they could short-track it if they buy it online at relic and simply do it for them, making life extremely easy for the people who buy & download it legit versus those who try to pirate it they have to go through a sea of prompts asking them to register each and every army & campaign.
I'm not a DRM fan, as I know how it can futz up a good game something fierce with all it's draconian methods, but at the same time this should at least stem the tide of those who download as it's easier just to drop 10 bucks to get the army and it'll be downloaded in a half-hour.
Plus those that are tangible media buffs (myself included) can get the race packs on DVD although it'll be a rough ride, I'm sure I can handle two or three codes for my eccentricity...