Please consider subdividing Straight-edge culture geographically, LC

I submitted the following suggestion/request via the Library of Congress's suggest terminology form:

I'm curious why http://id.loc.gov/authorities/subjects/sh2005006513 from "Straight-edge culture" doesn't subdivide geographically. Surely the culture differs from region to region as other "... culture" headings do, e.g. http://id.loc.gov/authorities/subjects/sh85109126.html Punk culture. Would you consider adding geographic subdivision to this heading?