Regarding call letters: From this 30-year in/30-year out radio survivor..... 'shrug'.
All the good ones are taken. Some of those occasionally get mothballed in unlikely hovels until a new format-of-the-month makes them marginally symbiotic again. The heritage calls, clever ones, 3-letter jobs, network ones, jaunty fun calls, alliteratives, etc -- all the good ones are taken.
What's left to pick from include things like W$HT, or ones they'd have to record for use, such as an endearing KSXS-FM and KHXH HD.
Nowadays, calls are used once an hour anyway, in some flanged belch of a legal ID (usually in between a 200 MPH ad disclaimer and some 1-800 number). And many of THOSE legal IDs bury some insignificant outpost COL and follow it with more prestigious ones.
The ionosphere is now filled with animal slogans and other snappy positioners like The Bear, The Mongoose, The Mountain, The The .....
As far as the radio-oversaturated East End market in particular is concerned, only the older listeners will remember, say, 'WLIR' as some beatnik station at one time (a few might remember when it was once in Rockland County, and iIrc, in Philadelphia). Perhaps a few of the older older residents will remember 107.1 as its original WWHB, a half-dozen call changes ago.
So it's doubtful that any average listener will snap their fingers and complain, 'Hey! Wait a minute! WBZO? Isn't that another station?'
And of course, that's assuming WBZO Bay Shore ever routinely GAVE those calls.
Format? Programming? In a market where 50 stations can be heard already?
The piling-on could be like the slogans befitting some pizza boxes. 'You've tried the rest, so here's another one.'
Listeners will go 'shrug'. At the calls and at whatever goes on 1570.