I have the impression that basic goalposts are widely accepted. If Wright can provide signatures or transactions for the original block, he will be accepted as

I have the impression that basic goalposts are widely accepted. If Wright can provide signatures or transactions for the original block, he will be accepted as someone special, if not necessarily Satoshi. If he can't, he certainly won't be accepted. If he can do that, then it comes down to deciding how he came by those private keys. It's certainly good to pre-register standards, but it's also a really hard question; Wright gave no indication of what evidence types he'll be using, so it's hard to pre-judge every sort of evidence he might offer. My one other expectation would be that he would explain why the "signature" that got him onto BBC wasn't what he claimed it was. If he is Satoshi, it's a damned odd thing to use a faked signature for his basic proof.