Now it just needs BuOrd's proposed follow-on...
There were plans made to replace the twin turrets on new ships with a triple fully automatic DP mounting similar in concept to those for the 8"/55 (20.3 cm) Mark 16. These were expected to be able to fire 20-25 rounds per minute per gun compared to 12 rounds per gun in the twin mountings. This project was cancelled at the end of the war.
More shellfire than you can shake a stick at. I wonder what 18*20 = 360 6" HE shells per minute would do to a Yamato at night at 10,000 yards...