Anyone familiar with the New Electric Muse compilations? It strikes me that they would be a pretty good template for how a programme on the tradition might work - starting with the Copper Family and like bods and bringing it right up to the present day, showing how the tradition has changed with the likes of Shooglenifty, Oysterband, Eliza Carthy etc. That should explode the myth the folk music is static and constantly looking backwards!