I like this discussion and the back and forth discussion of the trolls. The fae nature of Trolls is something I'd adopt as well. The rubbery regenerator of AD&D is so much more shallow then these folks. Go to Comment
The piece that stuck out for me was the description of metallurgy and mining as Dwarvethurgy. I like the idea that some basic technologies would have been perfected by other races before humans, and that as a result, their naming may be quite different. The word for Mining in common could be different.