We got everything covered in the team now, but we only have one FREDder.
What we need is a FREDder for multiplayer missions and mission concept tests and probably more. Axem is very likely to fred the missing single-player missions for the demo.
SoL is different from FS2 and will become even more unique, so it's a pretty creative job, I guess.

Also... we do have a story, but SoL is about fun. If you have a good idea for a mission, we can still change a few things.
And if you need any special content for your mission, just ask.

We already have some special conent. (like this:
http://www.hard-light.net/forums/index.php/topic,25406.msg889081.html#msg889081)
And we plan to do even more crazy things.
Please PM me if you're interested.