I am a bit sorry to say that the idea of the Reviewer Directory is not that new. I had still co-initiated such while at the JRC in 2010, and since not long ago it is online, follwing basically the same logic of what you have brainstormed here: http://eplca.jrc.ec.europa.eu/ResourceDirectory/faces/reviewers/reviewerList.xhtml . For some unclear reasons ISO 14044 is not listed/working, and other schemes could be added (e.g. EN 15804), but otherwise it is already there, is suitable and works. The question is which added benefit we can bring (with our scarce resources) and how far this would help the FSLCI?
Food for thought,