Hello John,
I didn't bother to watch the 14 minute video, just the first 43 seconds, so forgive me if I do not answer your question or speak out of line.
This add-on looks pretty cool seeing that you can view the real world map right inside Unity.
I am supposing that your goal may be to import real world height maps. Is this correct?
I have importing a few height maps using EarthExplorer to get the data, and then convert them using ARCMap.
I believe that's the standard everyone is doing.
However, with Course Forge, there should be a Terrain Importer included, that would make things much easier.
Thus, if you are looking to import real world height maps, there should be a tool in Course Forge to allow you to do this. Pretty cool, huh.
It should be a state of the art tool probably worth $500 or more, but possibly given with C.F.
If this was not your question, then I apologize.