I was wondering if it would be possible -- or advisable -- to tell ScenProc to load P3D's landclass BGL and assign the varying types of autogen depending on the region you fly through. I have used the same blend of trees throughout my California sceneries and it just doesn't look convincing. However the default scenery (in v5 at least) looks pretty decent, scrubby vegetation in the desert and lush forests on the opposite side of the mountain. Perhaps there is a way to accomplish this without going overboard on creating classes from scratch. But maybe there isn't a file listing what GUIDs the sim uses for each landclass.