Where is the line again?

There are specific inclusions for bamboo and cork (neither are wood) in MRc7, but it is still unclear where to draw the line between solid, wood chip and wood fiber products that still look like wood and those made from wood derivatives such as cellulose, polymers and distillations (papers, adhesives, composites, rayon, linoleum). No LEED project that I know of has ever included in MRc7 the paper backing on their gypsum board, insulation or building wrap, let alone thought about including the portion of linoleum or rubber products that is made from new wood derivatives. FSC certifies products in all of these categories (plus rubber, latex and other products made from saps, barks and leaves) but the USGBC/GBCI does not look at wood derivative products beyond a (undefined) point. I’d like that point defined. Poking the giant could make this credit significantly more difficult on future projects, but I also don’t want to be blindsided.