In addition to the new version terrains having finer possible resolution in the NS and EW directions they also can have much greater resolution in the vertical. Before there were only 256 possible altitudes for AH terrain, now you can set the altitude of each point to within 1 ft. This won't have much effect for planes, but I think it will be game changing for GVs as there will be many fine structure hills and gullies for tanks to hide in (vs the large flat planes of AH2). This will be especially true for terrains that import actual DEM (Digital Elevation Map) data. I've played with importing the DEM data around Kursk, Russia. The steppes of Russia look extremely boring and flat, but in fact there are lots of shallow erosion gullies everywhere that can hide a tank.