Fully agree with you there but that is not always how the bean-counters in Treasury and/or the political advisers at PM&C see it. So sometimes you have to get a bit "creative" when you first develop the business case that goes up to avoid wonderful projects such as Super Sea Sprite from being repeated. Therefore by calling the project Air Warfare Destroyer, we got an Aegis Frigate Destroyer.
Could you image if we had just called it Medium Sized AAW Combatant Project? We probably would have gotten an civilian freighter with an Aegis pyramid and a freight area full of VLS:
Lol, just my luck, I meant to respond to this post, then forgot about it. >.<
The beauty with having merchant ships is pretty well all of them are considered "large" by military standard, easy to achieve when the line is drawn somewhere between 8000 and 12000 tons, depending on what standard you are following. I concur with Ruger there, that's a Q-Ship, it's an awesome trick, but you'd really want your balls nailed to the wall before you tried it, since a superior opponent is simply going to sink all merchants they can find once it's unveiled and you'd cop all the blame. :-P
But yeah, the Navy sadly get's little to no say in what design is chosen, what they are called, or even how they are fitted out. Let's just say that the statement of requirements for the AWD project required each ship to have X number of VLS cells, and maybe the chosen design has Y. I can't really say more than that sorry. :-(