As it currently stands, it is looking unlikely that Skins@HiveWorldTerra or a successor website will support Dawn of War 2. As previously mentioned, it looked like Dawn of War 2 would not officially support modding, but later discussions have hinted that Dawn of War 2 won't support custom badges/banners, which has apparently been confirmed.
The reason (which is not given in the answer in the What we know about DoW2 thread) appears to be that THQ/Microsoft told Relic not to include it because people got upset with some banners (possibly including banners depicting genitals).
As long as this lack of badges/banners stands there will be two impacts:
1) (least importantly) I won't bother upgrading my machine and buying Dawn of War 2
2) (more importantly) Skins@HWT will have nothing to host and so will remain open with only DoW1 content
So, unless we can learn how to hack in additional content in a way that works with online games (since 'collectors editions' come with additional chapters and paint colours) the original Dawn of War will probably be the focus of myself and many other people for the foreseeable future.