I admit up front that I know pretty much nothing about what's standard for the Romance genre in our industry, and maybe offers like this are common. The reason I got this at all is because in order to show up for someone's chat in the Luna forums, I had to sign-up, and signing up apparently meant I wanted the eHarlequin newsletter. Either that or, as I was running late, I didn't actually read much beyond the "we own all your words and can quote them whenever we feel like without paying you" part, which meant that I was reluctant to participate freely in those forums, i.e. there could have been an opt-out that I missed, but I was also in the process of missing the reason I was signing up in the first place.
And the small post on accessibility has kind of turned into a state of the genre thing, and is a thousand words long, with digressions and rambling, which I'm not at all certain is pointful because the state of the industry now is actually a year or two old (the consequence of lead-times, among other things).
ETA: I can't think of an sf/f genre publisher or agent who could offer these services, and not be pilloried. I won't go into a long rant about why I think it's not a good idea to submit 400 pages of manuscript this way, unless anyone thinks it's not self-evident. Oddly enough, I probably wouldn't feel as squeamish if an individual were offering the same services -- but submitting to someone specific doesn't carry the weight of a large and well-known publisher behind it. And I think the PiTA factor of offering these services would outweight the dollar per hour value of actually doing the work, on an individual basis.