Actually, i think it will be pretty much like other modded games on Steam:
1) each server has a list of allowed mods
2) each user has his own list of installed mods
3) when we join a server it compares what we have with what it allows
4) we can join all servers with a single installation.
I think it's probably the reason they went with steam (it can differentiate between mods and cheats on a single installation). I'm not very much a fan of steam (i would prefer it to be optional or only needed for multiplayer), but the capabilities for mod control are good.
As for the British aircraft, i always felt the same Tom. I want to fly Swordfish in the evacuation of Dunkirk (they did fly there of all places, bombing advancing enemy troops and even taking on bombers in some cases), Blenheims in reconnaissance missions, Mosquitoes on pathfinder night raids and hunt for U-boats with coastal command. Well, we might be able to see such things in the new series, it will be a blast
