Hell if I were king for a day I'd just do USA jobs direct hire at least for all the smaller places no one wants to go. I'm sure there's plenty of people in commuting range of some of these smaller facilities who have no want to leave their local area, yet would love a high paying gov job with good benefits, and probably never leave. I'm sure Robert (long E, soft t) lecroix down in the bayou would love to make 85k a year at LCH and never have the urge to get his paperwork in to D01 2 days after he certifies.
Hell you could do the same thing for everything and just get rid of the err process altogether. Need bodies? Put up a listing. Want the job? Apply for it. Simple as that. For the high level facilities just make it in agency experience required. Boom, you've created a pipeline.
Sure have a "I'll go anywhere, I just love airplanez and headsets compliment my facial structure and am willing to roll the dice" bid for the really thirsty people, but I don't see what is so hard about letting people just apply to the places they want to be. They've overcomplicated the entire thing imho by doing it the way they do.