Here's a little fantasy for 850, if the license and transmitter will be sold. So many of us older folks want to bring back great Boston area radio stations of yesteryear, and we have WMEX back on 1510 playing much of the music that the original played (and some from a bit later).
850 as WHDH in its decades as an adult music station played much of the easy listening pop standards (the format then called MOR, "Middle Of the Road") that are now played on 740 WJIB.
Bob Bittner acquires the 850 transmitter site and shifts the WJIB 740 music programming to it as the revival of WHDH radio (TV Ch. 7 can keep the WHDH-TV calls). This would finally give his pop standards/nostalgia format a commanding AM signal throughout metro Boston within Route 128/95 day and night, playing much of the music originally played on the frequency.
740 goes to a collective of former WCAS and WUMB folk music DJ's who relaunch 740 as the new revival of folk/folk-rock WCAS.
This could all never happen, just an idea.