If they worked a deal with with Cumulus / WLEV,
I wonder if WBEB could just flip to 100.9 or WRNB to 100.5 (directional N/NE) but I guess its grandfathered in for a long time and those extra few miles of coverage aren't as important as those within 30 miles of the station...
Many years ago the allocation did shift 97.5 to Philly so maybe something similar or not too expensive is possible.
On that note, 94.5 and 97.5 would be better off trading broadcasting locations (again) to free up interference with WJLK & WXBK and 97.3 WENJ would get their interference reduced. Trading space with 99.5 in Wilmington might also help.
Not easy when the dial is this crowded but some ideas might help to some capacity...lol