In the middle ages, there was a tendency for people to take their occupation as their last name. For example: Smith, Miller, Taylor, Baker, Cooper, etc.
If that practice was to reoccur, I wonder what last name would work well for us economists. I have heard far worse last names than Economist, but I bet some more creative last names could be used to represent the occupation. Dismalist? Oikonomia? Maxyew (derived from "Max U")? Samuelsonite?