I too am working on a campaign (for the past year.) It's called 'The Hades Premise'. (And no, it is not as obvious as it sounds, tee hee...) Over ten missions are complete, and because I'm not entirely sure where I'm going, I don't know how many more are coming.
The strange part about it is that individually most of us do not have the skill or ideas to complete one campaign. But if we scrambled together all those missions from incomplete campaigns, I'm sure we could do a pretty good job making at least one campaign.
If anybody wants to laugh at my efforts so far, they can get to me through the PM system.