Congrats on the letter from the "big cheese" at Celebrity. Good guys don't always finish last, I'm happy to see. Your complaints were reasonable, indeed, and well-balanced with praise.
I agree with your husband and prefer the size and layout of the Dawn (and Sun) to the Grand. I kept running into blind alleys on the Grand and even got lost in the galley in a vain attempt to find another way out of the Boticelli dining room! I also talked to some crew members who had the same problem after months on the Grand. I hope the "blind alleys" have been designed out of the Golden and the mega ships that follow. We still enjoyed the Grand immensely and the Grand Med itinerary was a show stopper.
p.s. Leaving for the Canada/New England itinerary on the Crown in 15 days! I get excited each time like a kid at Christmas! I think I'm a cruiseaholic!