Not bloody likely on anything but an HD-2, 3, or 4. And it's already on one.
Why I don't think WYSP will ever resurface (and keep in mind that I listened to all but their morning shows, and enjoyed the station):
For a station that used its calls as its brand, consider that CBS chose to cut them loose, not park them, and they're no longer available. More of a clue, than a reason, per se.
As mentioned previously, the number 4 rock station in a 4 rock station town.
WIP-FM is already significantly eroding the overall audience of the Fanatic.
WIP should be less expensive to operate as mentioned repeatedly by others.
Little has changed at WIP on FM, except Eskin's exit, and I don't know if you could make a credible argument that he pulled down the overall success of the station.
WYSP was CBS' least successful property in Philadelphia on FM or AM.
They already tried active rock, classic rock, modified classic rock, and guy talk. Nothing they've done since Stern's exit has helped much. If they chose to play all-xylophone jazz, "active" polynesian, or raw industrial noises, then they don't need the WYSP brand.
Demographically, WIP's audience likely includes most of WYSP's audience anyway.
My "magic 8-ball" said "no".