There is a nascent game project I’m hosting at http://www.stardart.net/jos-rts/ (just forums at the moment) that is trying to build up enough momentum to get started. It seems like this is going to be a learning experience for most people who are interested so far so there are a wide variety of experience levels.
Thought some of this board’s readers might be interested. At this point there are still opportunities to influence the genre and overall design of the game.