Setting standards isn't a problem, many stores already do that and some are stricter than others and the concept  of a "ISO" style standard makes sense. The question I see here is going to over see this?

Because stores and content creators have time and financial constraints which might clash with the standards, would you go back to the longstanding idea of the "poser guild"?

If so then, then the 2nd question is who runs the guild?

Pinky - you left the lens cap of your mind on again.