Why does my work need to be edited?
Writing is re-writing, in that it is a constant editorial process. By the time your book is sent to a publisher, and if they accept it for publication the editor will invariably want to make editorial comments and that tends to be on a structural basis; which has involved sometimes months of re-writes. And you're wise to do it, I think. It should make sense. If it doesn't make sense you can argue your case, but by-and-large you will not get this book exactly as you would like it. And it does help to have a good, sensitive editor make comments on the novel.