Hi Mr. Powell--
Okay, I see that the editor made changes and that it is not an automated system.  I have told my boss about the situation and have asked for her advice.  I could be wrog, but it looks to me that many of the changes are subjective, and that the publisher wants there to be many so that they can charge you.  I could go through and mark the ones that, in my opinion, are completely unnecessary.  You, of course, would have the final say.  

I hope this helps.

Laura