The basic problem of CNN is that a person who tunes in at 5:30 pm has to get basically the same story as someone who tunes in at 7:30 pm so they have to repeat the same "news" over and over again. You could have a magazine format with lots of little documentaries about little different things that happen all over the world and you would be better "informed" in the sense of learning something but you wouldn't have as much shared experience with other viewers.

https://en.wikipedia.org/wiki/Ben_Bagdikian

is most famous for his book The Media Monopoly but his obscure 1971 book The Information Machines: Their Impact on Men and the Media was highly predictive of what news on the web was going to look like because he had worked for the RAND corporation and tried to sell a very unprogressive (in terms of business) media interest on the idea of online personalized news and they didn't want to make the investment.

That book has some of the most damning indictments of the concept of "news" from a McLuhanite perspective that ever been put to writing, most of all a description of how the editor of a small-town newspaper has about 6 seconds to look at a newswire story and decide if he wants to run it. It's a fundamental act of violence against the framework of reality to throw out 99.999% of it and the kind of "bias" that people get stuck on where people think we need an equal balance of stories that infuriate right-wingers and infuriate left-wingers.