Before such products as "EssayEdge" came along, I did quite a bit of editing for both fiction and non-fiction authors. And indeed, some would want the editing done to reflect one thing, another author might want it swayed in another direction.
Was usually fun, sometimes profitable, and always educational.
I find discussions on this forum to be almost always educational, and feel let down if I don't learn at least one thing each day here. Many very knowledgeable people on the forum, ALL more than willing to share their knowledge without maintaining that theirs is the only way. Very appreciative!