Where we agree (I think) is that the Dodgers and Clippers are strategically important to KLAC. It's good that you've now acknowledged the reach of the signal is indeed an important consideration.
Yes ... and no. Yes, having pro teams' games is strategically important to
any sports-formatted station. Having franchises in multiple leagues (in this case, both MLB and NBA) is also a good strategic move as it leaves less of the year absent of live games.
Although it's not directly comparable, let me give you an example from early in my career . At the first station I programmed in 1978-1981, KAAP-AM/FM in Ventura County, we were an affiliate of the network operated by KMPC/710 and carried all the games of the California Angels, Los Angeles Rams, and UCLA Bruins (both football and basketball). We used to split the AM from the simulcast for the games; note that with that combination of teams there was never any period longer than a few weeks when we didn't have at least one game from one sport or another.
If that combination were available today as a package, you can bet I would want to build an all-sports station around it. But reach of the signal? KAAP-AM was a mere 1kW, but had strong coverage throughout the market.
I compared the daytime primary contours of KLAC and KEIB. 570's 2mV/m signal goes up to Ventura/Oxnard, into the Antelope Valley, and the Inland Empire (stops just short of the Coachella Valley), plus some coverage in north San Diego county (along the coast, mostly).
1150 still gets to Ventura/Oxnard, but the Antelope Valley and Inland Empire are in the lesser 0.5mV/m contour, as is the coastal coverage of North County. But the Dodgers also have a network affiliate in Lancaster (KAVL/610) so there's some mitigation.
Those are relatively minor differences in signal, so if iHeart needed 570 for something else, 1150 would be a reasonable substitute, and the change in coverage area wouldn't likely reduce agency buys, since they are more concerned with the demographics (as has been referenced above).
I still would like to know if you think a 0.0 share in Men 25 to 54 during sports talk programming would command the same billing as a 10 share.
Since the vast majority of ad buys in L.A. are agency buys, and since they buy based on the format and not the ratings, I do not think the billings would change by much.