Speaking of Flight Leader, I would love to see this updated. I still have it on an old Windows computer, including the scenario/campaign builder. Perhaps a 3D, turn-based environment with skinnable planes. Add-on paks could include planes, planes and scenarios/campaigns not included in the initial release.
It wouldn't be easy, since flight characteristics for all the planes, as well as AA missiles would have to be researched, as well as radar and ECM measures to name a few.
Perhaps one day...