I see that there has already been "segregation" of markings between KGO-AM and KGO-TV, but how about potential call letter changes? KABC Radio and KABC-TV, WABC Radio & WABC-TV? WLS & WLS-TV?
We know how "splits" like these, especially by TV, are not well taken. WTAE-TV in Pittsburgh still refuses to sell the calls to radio after the AM was sold years ago. I hear it's a million dollars just to get the calls approved by the station, let alone the FCC.
KGO-AM was the 4th ABC O&O and is, I believe, one of the oldest original calls in the country.
I know when Cumulus traded up in Reno, the original 3 letter calls were lost and reformed out of 4 letters ... from KOH to KKOH.
I think it would be criminal to change any of these ... but I see TV getting the edge. They may say ABC7 ... but there's still those call letters ... and I don't think Disney is going to want to share with their former operations, would they?