I've been pretty lucky with selling on Ebay, knock on wood

So far I've had one big issue with a buyer. However reading most posts on these forums and others, it's pretty obvious that sellers are becoming disgusted more and more with Ebays total lack of seller protection. I've been thinking about ways that sellers can again become more at ease with selling especially high value items. I have an idea and I don't know if it's something feasible or how it would be implemented.

Let's say it's an office equipped with both USPS and UPS shipping capabilities. In that office would be a person or several depending on demand who is a licensed notary. Ideally this person is experienced with how Ebay procedures work and also has a basic knowledge of various high end brands.

Let's also say that I just sold a diamond ring on Ebay. Before selling the ring I brought it to a certified gemologist who evaluated the ring and gave me in writing the certification that it is in fact what I'm claiming it to be. So now I bring this ring along with all the documentation to this office. The person examines the ring based on my description on Ebay, evaluates the certification, contacts the gemologist if deemed necessary and then packs and ships it according to Ebay rules.

On the other end, let's say the buyer received the ring and wasn't satisfied. The buyer wants to return the ring. They would also go to the same kind of office for them to pack and ship the ring. The ring would be shipped not to the seller but to the office where the seller shipped from so that the third party would be there to witness what the seller received back.

Now obviously there's more work involved for the seller. But if it's a high value item, I'd think most sellers wouldn't mind doing this to ensure that everything goes smoothly.The problem with the idea is that it puts more responsibility in eBay's hands and responsibility is the last thing they want more of.

Even if the idea were accepted, I think eBay would make a mess of it. Why do I think that? Look at what is happening with their consignment valet program. If they can't successfully sell on their own site, how are they ever going to manage an escrow-authentication program, which is considerably more complicated.