A feller named 'Drayu - The Dude' has got a page dedicated to IL-2, on the War is Hell gaming website.
http://www.warishellgaming.com/forums/showthread.php?t=25841
There's a link in bolded red, 'CLICK HERE', it takes you to http://www.drayu.com/il2/, and there is a file named coop.rar.
65Mb of IL2 missions. Many of them are already in our 'base' of coops that should be somewhere in the vault, there's also some extra ones.
I'm still working on a selection of 'good fun enough' coops... that's kinda difficult, as a big part of the fun is not knowing what is next, what will happen next, but one can only really judge a mission as being good fun, after one has run it. After that, one knows what will happen, and that takes out a big part of the fun.
One way to reduce that risk is in having numbers, large numbers of missions.
Currently, I got 2103 Coop missions for IL-2, though thre might be some doubles in there.
Might also need to cleanup in a different way, as when I check for flying distance, some 680 missions have waypoints taking red and blue for a flight of over 120km's.... 18 missions with only one human player, hm, maybe those should not to be called coops ... lol
Yeah, I'm rambling now...