What heavier 9.2-inch armament changes for British armored cruisers

What would change if British armored cruisers from Cressy through Minotaur used a sixteen-gun 9.2-inch Invincible preliminary arrangement?

Surface firepower would improve dramatically, especially at Coronel, but extra crew and fuel costs would rise and submarine danger would remain.

In this counterfactual, extra 9.2-inch guns increase British armored cruisers' surface firepower. More crew and greater fuel consumption would be costs of the redesign. The Battle of Coronel is singled out as an engagement that could change substantially. Additional guns would do little to protect Cressy, Aboukir and Hogue against submarine attack, although the redesigned ships are expected to have better subdivision.