What could be better for the legalize movement than high value jobs being created in the legalized States solely because of the legalization? If I could find a way to make the Fed join in on that, any way at all, hell yes I would do it. That said, it's likely unworkable, as you say.
Currently we have Coulter and a slew of other conservative asshole politicians and pundits spewing their drek about 'useless, tax leaching potheads'. I'm all for anything that we can use to hammer home the point robulus made earlier -
One way I can think of is to make the legalized States the preferred working locale for as many workers as possible, in as many industries as possible.