Thanks for the link. Guess I wasn't using the right search terms.
Crap indeed. I tried the revit importer-to-revit-to-sketchup work around and it bloated my model from 11mb to 76mb. Since I didn't have time to experiment with other options I had power through it.
I told the higher-ups until I find another route, models requiring heavy terrain work will either have poor accuracy or will require a topo survey. Since topo's are rarely handed out with requests for proposals it looks like we're going with poor accuracy.
