Here's another hypothetical question for writers: How much leeway does your editor have with your book? Does s/he discuss all changes with you? Do you give your editor carte blanche? I assume the process can be slightly different from one publishing house to another, but there are also norms and standards within the industry.
I know that proofreading is a separate thing - catching typos and inserting missing punctuation is a separate thing, a separate skill set, so I'm not wondering about that side of things.
But when it comes to character development, setting, dialogue and so forth, what sorts of changes would you want to have a say in, versus what sorts of changes would you let slide? Or, would you just let them do what they want and assume that "Father knows best"?
Finally, how would you feel if - suppose - the editor made changes but didn't tell you or show you what they were (for example, you did not get a blacklined version or a "tracked changes" version)? Imagine getting the manuscript back and finding out the word count was significantly different but you didn't know what those added or deleted words were.
In your experiences, what is usual and what is unusual?
I'd love to learn what your experiences have been like.