I really, really, really don't want to get drawn into this but you keep making points that I need to answer.

Why keep a poor version of 'Adieu sweet lovely Nancy' that has already been recorded by much better singers?

I once heard a tale of one of the Kennedy's giving an illustrated talk at Cecil Sharp House. He allowed one of the "exhibits" to sing one verse of a song then pushed him aside with the words "and now for a much superior version" before dragging on the next "exhibit". Would you have binned Pop Maynards's version as inferior?

I'm surprised this thread has got so far without a mention of Doc Rowe.