I like this thought. It would give the battleships more the illusion of being truely massive. I can see a lot of people hating it because the battleships wouldn't be near as fun to maneuver without plenty of jump lanes nearby and handy, though. On the other hand, battleships are supposed to be giant mobile forts and the need for real scouts would open up plenty of role play. Light forces could be used to scout, interdict, and hold until the main fleet arrived. It opens up plenty of tactics and role play.
It'd be a lot of work for the devs, though. I can see a myriad of things that would need rebalancing with just a quick glance.