If an out of market station serves a need, people will tune in. Country fans in Ocean County were listening to Cat Country long before K-98.5 decided to sign on with the format - it's a risk considering that a good 75-80% of their signal is in the same area that receives Cat Country.
I think when the next book comes around, G Rock Radio will likely appear in the Atlantic City / Cape May books thanks to their relocated signal and the fact that it's different from any other station out there.
I think if Active/Alternative WJSE (102.7 The Ace) had a slightly stronger signal that could reach into Ocean County, it would be strong enough to make a mark in the Mon/Oc books. It has musical variety unlike any other station and hits the spot for anyone craving heavier rock that isn't played elsewhere.
On the Delaware/NJ front - don't be surprised if you see people listening to 93.5 The Beach in Wildwood and Cape May. It comes in just as good as WJSE if not better, and has a similar sound with a deep library of Active Rock and lots of currents.
Basically, all of these stations that are strong enough to reach other markets could feasibly try to sell advertising in these areas - maybe they will make a stronger case for themselves when the next books come out.