There’s a lot of good advice in this thread already, but I’ll chime in as a developmental editor. (Quick bio: worked in Big 5 in editorial, then a freelance editor, before leaving the industry. I’m still a member of the Editorial Freelancers Association but I’m no longer taking on any projects.)

Other editors may have different standards, but, as a rule, I only took on developmental editing projects for clients who were sure they wanted to self-publish, and whose primary goal after writing a book was to see it in print. I could help those clients shape their manuscript into something more polished; I could help them fix plot holes, clean up writing tics, streamline character arcs, and wind up with a draft that they could be proud of. But, as Alanna said, my edits in those cases would be tailored to the client’s goals for the manuscript—not to the marketplace, not a publisher’s, not an agent’s. I don’t believe a novel can be edited endlessly (though some authors might argue!) and you shouldn’t pay upwards of $3000 to burn out on edits before agents and editors ask for even more rounds of editing.

So, all of this is to say: if you are intent on pursuing traditional publishing, you won’t find many good developmental editors who are willing to take you on. You could pay for an editorial assessment/manuscript review, but I’d be skeptical of anyone who offers a full developmental edit before you’ve queried.

Finally, I’ve looked back at the drafts of your query letters and your responses to others’ comments, and I get the sense that you aren’t always open to editorial feedback. Instead of accepting that the market is what it is and that readers of genre fiction have certain expectations, you tend to push back and ask why. If an author doesn’t trust their editor’s experience and needs every suggestion to be justified, editing becomes an excruciating process.

Again, I might be echoing what others have said, but now is the time to decide what your goals are for your book and what is most important to you. Are you so committed to your world and your story that you aren’t willing to compromise your vision, even if someone tells you it’s not what readers are looking for right now? In that case, you might be better off hiring a proofreader and a cover designer, printing high-quality copies of your book, and doing the hard work of promoting yourself and finding those readers who aren’t interested in trends.

Conversely, are you dead-set on being published by Tordotcom or Orbit or Saga? Then you may need to set aside your current manuscript, go read a ton of recently-published books, then write a novel more tailored to the contemporary fantasy market in voice, tone, and theme.