Will USGS tiles allow us to share the converted ttc files? If so, we'll need an easy way to crowd-source the conversion/upload process and an easy way to select those converted files and download them for FS2 installation. Same possibility for cultivation toc files.
This download/conversion process probably takes ~1 hour per tile (level 9) or 2 hours if you include elevation & cultivation but a USGS option with already-converted ttc files would bring that down to minutes for a new FS2 customer.
Then we could move on to the next challenge - tall city buildings or AeroCityScenery