OK, so you are going to tell me that four 5" guns are 50% as effective as nine 16" guns for shore bombard?
Benson Class destroyers only had 4 “large” guns, if you want to call 5" guns “large.” And they were the workhorse of the US DST’s in WWII. Even the Porter Class DST’s had half of their eight 5" guns removed during the war since the ships were top-heavy and needed better AA protection.
The Atlanta Class Cruisers though had 16 such guns, as well as their depth charge batteries, etc. THESE ships would be a fitting and probable equivalent to a technology improved Consolidated Bombard “Destroyer”
In all honesty, I simply do NOT see how you can even begin to think that giving a ship with ONLY FOUR 5"/38 guns 50% of the shore bombard that a BB has, when the BB has not only the NINE 16" big guns, but also has more than double the number of 5"/38 (20 total on 10 twin mounts, half on each side of the ship).
Just not happening in my book.
And that my friend is the result of a bit of research to confirm what I posted previously :-)
Also, there are these quotes about the “role” of a DST:
With time, the destroyers received the very weapon they were committed to destroy: the torpedo. Little by little, their role expanded until it encompass all secondary tasks in a fleet: fight against submarines, attack of the enemy fleet with torpedoes, …. During World War 2 they also became anti-aircraft platforms.
http://users.swing.be/navbat/edito/navires/typesnavires.htm
nothing there about shore bombard…