It's a cool idea, but wouldn't the KYCd example just incur a lot of risk. Most likely they also will ask after a few too many tx what the person is up to if it's out of the norm many. I don't think anybody would run that under their real name just to be accused of money laundering. 

This gateway would of course also be trust based right? I could accept somebodys ecash and then not pay out with my node and say good luck buddy, basically.