I would film a few more people in a similar manner to the superb vignettes of Andy Irvine, Paul Brady, Martin Carthy, Richard Thompson, Peggy Seeger etc in "Folk Britannia". Simply presented, nothing to hide behind, the absolute antidote to Cowell Crapola.   

Obviously we can all think of suitable candidates but Swarb is a no brainer for a start. And from the Mudcat side of the pond, The Dixie Bee-Liners spring to mind although there are rather a lot of them!