An interesting post that is very relevant as I edit ‘Wyrm Bait’ (and have to miss blogging properly today).
As I say in my comment, below the post: I used some beta readers for my first novel, and got some valuable advice from some of them at least. Going to do same with novel revising at moment BUT also sending it to a professional editor. Having both sets of comments will help me decide how much gets hacked or honed. Read too much self-published stuff that feels as if the writer never got any help.
Will be interested to see comments and thoughts.