I know what Fallout's radio lacks that would make it so much better: An in-world talk show. Like, the songs are great and all but they're not unique to the game since they used licensed stuff. I like the DJ segments, tho. But I mean... All we get is a few seconds of Three Dog, or Mr. Las Vegas, or Travis here and there (depending on the game).
Imagine a GTA style talk radio station, but in the Fallout universe. Maybe the host gets a raider to talk to that inevitably ends with the raider shooting up the studio. Or a hick wastelander trying to show off his 3 headed brahmin because he doesn't understand how radio works.