I recently played a few single player missions and it was quite fun. Unfortunately I didn't get it to connect to any multiplayer service when I tried it with Elandrion. Even via GameRanger it failed. I think it has something to do with my router setup (damn issues from the past haunting me). But I would be up for some RvS old school action.
Beside that I play some Siege from time to time with Elandrion. Especially good old terrorist hunt. Personally I prefer Squad (see my post above) the most at the moment. Really tactical and lots of team work to get something going. Really enjoy it.