Not likely to be a big draw for advertisers. It's mostly an ego trip, as in TV there is no station loyalty except for local news.You don't think advertisers would be interested in such a show? Or do you figure that the audience a retrospective would attract might be large but too old to matter?
Radio stations have a certain degree of loyalty based on their format. TV stations are block programmed, and have no such loyalty factor. We change channels faster than Trump changes wives...