I am with heresluck in that I haven't seen the kind of breakdown you have, and I certainly haven't seen any vidders particularly invested in postmodern art. I am puzzled also by your analysis of LKBV, because the category was created by Sisabet and has been embraced by, say, Luminosity and Absolute Destiny, who are all among the vidders most likely to use, say, collage or sophisticated technical effects; most of Sisabet's vids, I think, are straightforwardly but not simplistically passionate, whereas Lum and AD use much more irony, although in individual and very different ways.