move people internally onto the Bigger A/C
Define bigger aircraft? If you mean G4 or F7X, then yes it should be done internally when operational requirements dictate.... If you mean E170 or B747!! Then forget it, SFS isnt a stepping stone into the airline, there is no defined transition path.
That isnt to say that it hasnt happened in the past, but i would bet on it happening in the future
Mutt