let me show you some screenshots of Stuttgart airport demonstrating the capabilities of the SDK tools.
See the airport buildings and in the background the nice hills of the Swabian Alb.
1. Downloaded aerial images with FSET and converted with geoconvert.
2. Dowloaded OSM data and converted with scenProc to aerofly cultivation.
3. Downloaded free sketchup models, converted with ModelconverterX and placed in AC3D. Converted with SDK converter.
This scenery has been done in a very short time. Of course the scenery is not finished, the remaining work to fine tune the last 10% may even require more time than the first 90%.
And it cannot be done by just passing by without learning programs, coordinates, converters....
But: If you like to modify your scenery, if you are not afraid to learn some new things and if you find the time for all that stuff, give it a try. The tools are existing. The main thing is: Have fun with it!