Mainly to motivate myself, I made an initial test regarding using 3D assets from SF2 in the open source flight simulator FlightGear.
Since FlightGear uses the same 3D graphics library (OpenSceneGraph) that I also use in the LODViewer, I could easily reuse my LOD file loader plugin with only minor modification.
This is only an initial test. There are still a lot things to do regarding 3D models: animations, shader adaption, .... not to mention reimplementing the SF2 FDM in FlightGear. But maybe some day...
TWs P-51D at Honolulu International (the current FlightGear default airport). Note the missing landing gear caused by nonworking animations:
Cockpit view: