So, I was talking to a publisher who is expanding their middle grade fiction list into YA, expecting that they would want more vampires and zombies in high school. I was shocked when he said, "What we're really looking for is historical YA. We think it will be huge."
So, if you've got a historical that you can change the age of the protagonist on and/or a YA that could/should be set in the past, get to work polishing it off.
And let me know when you sell it (or send a query to Jenny Rappaport at firstname.lastname@example.org).