What would be great (imho) is to work on a dynamic campaign. I had a chance once to be in a team which launched a dynamic campaign supporting 3 simulations at the same time though a storyline, sims were Operation Flaspoint, Sub Command and FA18. Great experience and it was really funny to see how people could be proud of their side, and read the (good spirit) forum war and propaganda between two games
So I'd really support a dynamic campaign project which could involve players from all the communities but it requires skills ! (and time...) could be a good thing to unite everyone around a common project