Conceptually I think that can work, but that doesn't seem to be how the GoT story is told. I think the concept works better without multiple reference points. What I mean is along the lines of how it isn't just "Valyrian steel", but that Valyria is the source of dragons and Danaerys' heritage and likely her resistance to fire. I think the author intends there to be more to each of the lore bits that are discussed, especially the ones that make it into the show