Here we go again Kirkhill
First of all, by its very definition, doctrine must lead, not follow (the reverse of what you propose). Why? Simply because doctrine is a set of accepted principles
created specifically to guide everything we do. It exists independently from the type of equipment we have at any given moment. It provides guidance on our deportment that governs how we go about doing it.
For instance, the U.S. Monroe Doctrine: "if we catch a European finger in the Americas, we will cut it at the shoulder" guides the U.S. foreign policy since it was stated. Another example is the U.S. Army doctrine of Overwhelming Force, adopted after the Vietnam war, which led to the successful conclusion of the Cold War and campaign against Saddam Hussein in Koweit.
The U.S. Navy has a doctrine, which we follow also in Canada, which is the Never Again Doctrine adopted after Pearl Harbour: basically, it states that warships have to be manned as if at war and operated accordingly at all times.
This leads to the second point: Doctrine has nothing to do with manning, at least not as far as determination of trades and operator's qualification go, but rather only in so far as
manning levels are concerned.
Thus, we don't need Nelson era gunners, or craftsman, nor Fisher's era coal stokers.
Heck! You don't even need to go further than the arrival of the HALs. We went from boiler room artificers to diesel/GT propulsion. Did that require a change in doctrine? No. it may have changed the qualifications of the members of the Engineering department, but the doctrine remained the same and it dictated the calculation of the manning levels for the new ship's as it had for the old: "With this equipment to operate, what would be my wartime patrol watch requirement".