I know zilch about radio marketing, but I do know:
1. I'd LOVE a good late 80's to early 90's station, and I know I'm in good company. I'd especially one that also dabbled in House and Latin Freestyle as opposed to standard pop, though my wife and most of my contemporaries would probably prefer a few hours of rock here and there. This is where things could fall apart. I would think the 80's-90's pop would serve as a common denominator, a core product, in a sense; and hour of House on Friday night, and hour of Freestyle on Saturday, and hour of glam rock on Tuesday through Thursday, are all things that could appeal to different groups of listeners, though I don't know how pragmatic that would be.
2. BEN-FM isn't cutting it. There is too much repetition, and even though they switch up their playlists every month or two (or several...) hearing the same song 4 times a day is too much;
3. The music is key. To be sure, DJs have a role. I particularly enjoyed Q102 back in the early-to-mid 90s and the interesting mix of personalities, before it became just another top 10 station that probably plays on a loop with the occasional retard chiming in and playing dumb morning shows. I do agree that any format has to be advertised, at least a little, because radio listeners don't seem to me to be channel-flippers in the sense that cable TV users are.