I rather like that. It doesn't eliminate the problem of combat ships being stripped of heavy hyperspace engines, and there may be other subtle issues. But to move a fleet of ships from where they are to your current location would require two trips in a fast vessel; time consuming, but not as time consuming as moving them one at a time at their own jump limit.If transfer is to be stateless then Frontier could include a delay of sorts by the transfer itself changing from a "summon" to a "send", i.e. requiring the player to travel to the location of the ship then initiate transfer to a destination.
Less fun if you have ships all over the place and want to reconcile them, I guess. And you'd need a whole support subforum just to deal with folks who "pushed" their fleet to Jaques then changed their mind...