How about People state whether they are "Movie", "AU" or "Never Built" in their posts. Saves space on the forum and saves time to keep people from looking up the design to find out if they were real or not.
Worth trying, but yes, I agree, that its getting impossible to differentiate between 'never built' i.e. something actually proposed, and what springs from the fertile imagination of our esteemed members; on balance I would think most stuff here is of the latter.