Keep it simple. One step at a time.

The idea of steadily correcting errors and gaps in the DT, and having accurate infotrmation attached to the songs, and using the goodwill and varous expertise of Mudcat members to do that seems a very good idea, and it should be enjoyable and interesting seeing how it works out.

But any idea of trying to have some separate elite forum of the knowledgeable doing it all just strikes me as... not too good a way of operating.

Whether a folksong variant comes from a book or has been put on to a website somewhere, I can't see much difference.