newt, until 22Gp bolleauxed it all up in 2012, the RAF actually had virtually the system which you describe....
It was a retention incentive, primarily, because people would put up with the $hit knowing that they'd be set up for civil flying when they left....
Whereas now there's no such incentive. FRI might bribe a few, but restoration of the previous 'QSP accreditation scheme' would cost far less.