Maybe you should have called your service Developer Provenance or Developer Pedigree if you want people to delegate their hiring decisions to you based on the rigidity of your screening criteria.
I wouldn't want to work for a place that was so technically strapped that they couldn't evaluate me as a candidate on my own merits. But I do like the idea of a "Developer Auction" where anyone can participate, like in a real market.
It's a shame that after creating a profile I have to go through the trouble of contacting you to be notified if you decide to start offering such a service.