Historian

I'd hope for maybe a re-implementation of multiplayer, or new features, to go with a general refresh of the engine that allows modern stuff like TrackIR and maybe even VR out of the box. Even just being able to alt-tab out of a mission would be cool.

I'd kill just for MP and QOL changes to the game. That would be the first step in expanding the community, getting some virtual units spun up. Maybe move on to ramp starts or on-field rearming like in DCS. TK has built a lot of aircraft for SFMC and the like. It's not crazy to think he could butter them up for future SF2 DLCs on the easy. He's got the assets.