"Another reason deep-wells fell out of favor was that the required space resulted in a shorter oven on the side they were located on."
Personally, I much prefer the shorter, but wider companion oven rather than the tall, narrower oven that came on the ranges with the 21 or 23 inch wide master ovens. With two equal width ovens, you can easily fit a cookie sheeet, full size broiler pan or a Bundt pan in the companion oven. We did briefly have an early 50s Frigidaire 40" range with two full height ovens in the collection, but it only had one 8 inch and 3 6 inch surface units on the divided cooktop. Seems like if you cooked enough to need 2 full size ovens you could use another 8 inch surface unit.