That's not how music scheduling is done today. There's a difference between a playlist and a library. The playlist doesn't stay the same week after week. The playlist is the songs rotated in a given week. At the end of that week, you replace a bunch of those songs with others from the library, and cycle them through for another week. So there's less chance for burnout. You also cycle the songs up and down the playlist in terms of spin numbers. So one week, Fleetwood Mac gets 20 spins a week. Next week, it's Boston. So the number of songs in the playlist doesn't matter, because the songs themselves are always moving either in or out, up or down.
This is why it's important to have currents in a playlist. Currents add change and variety to a playlist, whereas a gold format has to create that change and variety.
