Doesn't even have to be as sophisticated as a feed from a satellite customized to the local market.
As pretty much all the regulars here know, as part of my consulting agreement with Don Davis' New Mexico stations I directly program one of his Albuquerque stations (KRKE) with The Eighties Channel™. I create the automation logs with all of the music and imaging and upload them directly to the server there, and Don's traffic software merges the commercial logs into mine and the automation computer just runs it. I even have remote access to the automation in case something glitches and I am the first to notice it.
While we do not subscribe to Nielsen, the reason for that explains our success. Don and I believe that the most important ratings come from the local businesses who are the station's advertising clients. If they like what they hear on the air between their spots, they will keep renewing their agreements. Don is making money, while freed from having to worry about the on-air presentation, the advertisers are obviously happy because they stay with us for months -- sometimes even years -- at a time, and everything I know from a half century's experience about tightness goes into the product I create for Don and his team to sell.
But my friend Paul Walker's point is well taken. A station that cares about what is being sent to the transmitter -- regardless of how it originates -- will always sound better than the ones who just plug in the satellite receiver and walk away.
(BTW, Paul, congrats on the nice write up in Radio World.)