Suppose Craig Wright convince the real Satoshi Nakamoto to lend a signature of Genesis Block and Craig produce a valid signature then what will be the outcome of Craig Wright's case ?
And why exactly would the real Satoshi want someone else to impersonate them? This doesn’t sound like something that can happen but if for any reason it happens then the court will have to Rubin favour of Craig and declare him as the true Satoshi but as it stands now Craig Wright is a Faketoshi and he’s only trying to steal what doesn’t belong to him unless otherwise proven.
I think that Craig Wright, should take a permanent break and let the real Satoshi Nakamoto, continue to remain anonymous. It baffles me how the real Satoshi Nakamoto, will make all the efforts in the world to become anonymous and suddenly showing his face, I don't think that this "faketosho" has given us any tangible reasons why Satoshi, will want to show his face. Bitcoin is about privacy and freedom to the holder and the creator obviously wants to make practical it's decentralization by being anonymous. That is what is best for Bitcoin, we thank him for his genius creation and may he/she/they continue to remain anonymous.