Great ideas Ed! I think we all have considerable experiences in the "hall of shame" as we fell prey to clever and innovative 'treasures' which were indeed too good to be true. Still the optimist and romantic in us compelled is to believe the 'stories' which surrounded the item.
I have always felt the best defense, indeed the most powerful weapon to keep us from further being victimized, is KNOWLEDGE, which actually is what these forums are all about. One of the drawbacks is that often, as noted, many do not enter detailed observations so as not to provide 'training data' for those out there concocting these artificial antiquities.
The elephant in the room however, is that of legality, and potential issues with declaring an item 'fake' etc. and to host a venue specifically to display a rogues gallery with examples, while obviously helpful, would unleash nightmarish complications in my opinion.
The only thing we can do is prudently make observations and comparisons with known other examples with provenance noting the differences without direct accusation. As our core of knowledge grows, as it has here in the past years, the 'trolls'
will find it less lucrative to enter here as they realize our awareness.
I feel and well know the frustration, plenty of scars !
Nevertheless, well said and thought out ideas, and great attachment! Thanks Ed!