Of course you're right, Bill. Banjos, mandos, and fiddles tend to crush the more finesse instruments like autoharps, dulcimers, etc. But I do think most sensitive players know when to drop down or drop out to let everyone have a voice. It would be nice to have some pickers too, but I think an emphasis on traditional tunes with vocals (say, as opposed to Fiddle Tunes or Newgrass styles) might let non-instrumentalists join in more comfortably. Songs like Dark Hollow, Amazing Grace, Wayfaring Stranger, and Jesse James are what I'm thinking of.