That is a huge problem. But imagine if The 700 Club was gone in favor of more morning news at 9:00am, Atlanta Plugged-In was gone for an expansion of the noon news, Informercials would be gone for maybe The Insider at 1:00 and finally, Inside Edition moving to 7:30 after CBS 46 News at 7:00 (if they do decided to go there because after all, 11Alive no longer does it).
But another problem that I see is that because WGNX joined CBS at a time when WGNX's news department was very small and barely got enough traction, it caused a ratings freefall because then, more and more people were only sticking to WAGA when it became FOX because of continued news in several timeslots. Yes, more watched WSB but more and more switched to WAGA when the switch happened.
In summary... WGNX joined CBS when their news department and ratings were too small. And even if CBS is America's Most-Watched Network, it still hasn't helped WGCL to this day at all. That's my theory but I may be wrong.