If they want to be massive cheapskates, they could just sell the Hamburg land, turn in the WGR and KB licenses, and move the sports programming to 1400AM and 107.7 FM. Yeah it would be sad to see 550AM go silent but between 1400, 104.7, 107.3, 107.7, and 98.5HD2, I'd think most listeners wouldn't lose access. The 2 or 3 times per year the Sabres and Bills both play, just put one on WBEN.
Not to be a snarkapottamus, but with all due R-E-S-P-E-C-T, that's ↑ not a workable, profit-making scheme. 1400 is a 745 Watt teapot that barely reaches the city limits at night, and stretches to reach the first ring suburbs during the day. It's translator at 107.3 is not much better, with less than 75 watts. Presently, 1400 does the right format for where its stick is, the urban core.
WGR's day signal reaches from Detroit to Syracuse, and solidly penetrates the two county Buffalo-Niagara Falls metro. Sports is a perfect fit for this AM frequency. WGR sells those daytime dayparts to the max and generates significant revenue. The WGR
night pattern , bad as it is to the east, covers the north and south towns population centers. Much has been written here about the deficiencies of the 107.7 signal. No need to whip that dead horse. Yes, 107.7 had some decent ratings with a healthy assist from the Sabres when it was Sports WNSA. Could that happen again as "WGR-FM?" It's possible, but why take that risk when WGR-AM is a known, established brand and a rolling success? Not saying it won't or can't happen, but the likelihood at this writing is slim. Maybe Audacy does a simulcast, which has been suggested by a number of posters here, to fill in the AM nighttime nulls to the east.
The HD penetration in this market is negligible. Trading known penetration from a station like WGR for an unknown HD platform in which most users are disinterested is just too risky. If anything, streaming is the present-to-next alternative, which is probably where all this is going in the not-so-distant future, especially for sports stations like WGR.