Actually, I've sent in some missions to the Terran-Vasudan War campaign in an offer to FRED but they've never gotten around to looking at them (they were just the missions I had in my three mission demo for uh, "valley of death" or whatever I was gonna do), I've also playtested for Hippo's All Hands to War and provided grammatical/spelling corrections (many of which didn't reach the demo release apparently). So if I were to apply for yet another campaign, I think I'd be stretching my resources pretty thin. Especially considering all of the other things I doddle in, including providing content for and editing a monthly electronic newsletter.
My campaign was going to be hopefully pretty big actually. Around the size of derelict, I have a lot of good ideas but they're probably not as fun to actually implement. I'm also limiting myself to using pre-existing MODs so that will cut down development time a lot and basically means all I would be doing is fredding. I've already got the basic story line set-up, with a few major plot twists but it still needs a lot of detail and most of all resolution of some sort.