Dear Miss Snark,
You have frequently insisted that good writing rises to the top of the pile, but what happens if good writing simply doesn’t fit? Children’s books, for example, have become increasingly more succinct and focus on telling the story mostly—if not solely—through pictures. However, many older (but beloved!) children’s stories are roughly equal. Has the market changed irrevocably? Or would a more wordy children’s book—if the writing was not extraneous—still have a chance?
I don't do kids books and it's a very much unto itself part of the industry.
When I find good writing, writing I love, even if I think the particular book won't fly in the market, you'll hear from me. No form rejection, probably even an email or a call.
I might ask if you've got something else, I might make a suggestion about refocusing the book, I might suggest other things to make it more "take on able".
I don't just toss good writing aside saying "I can't sell this" without covering all the bases.