Well, I've got a mission that could be ready for beta. If you're willing to bear with an outdated, unfinished modpack (back then, it didn't seem that bad), old models, out of context story (I planned to make it a part of a campaign) and cockpit stutter due to distances used (the reason I gave up on the mod idea in first place), and if you'll promise you won't complain about writing (another reason I gave up on that mod was that I realized the story was rubbish), I can send it to you, provided I can find it. A least it's FREDed pretty well, considering I made it for 3.6.10...
I haven't had time to do much FREDing, not was I able to stick to a mission idea long enough to finish it. Part of the problem is that I don't like FS2, and I'm not interested in making missions in this universe. Maybe when WCS releases it's source code, I'll write something for it (I gave up on it upon finding out how limited their build is).