I kinda hate to say it, but Armymatters has raised a good point about how we go about crewing our ships. IMHO, our ships are crewed today, for the most part, "because we have always done it that way". I'm not sure that we can get away with that next time around- simple demographics are against us. I agree totally that you need a certain minimum amount of crew just to do damage control (and having been a part of the 2 day, 2 chapter engine room fire on HMCS OTTAWA in 2004, I now know first-hand just how much of an all-ship evolution this is) and to fight the ship efficiently. The are also daily maintenance , husbandry and logistical issues that require bodies. I also know that, the more bodies you add to a ship, the more it becomes a "self-licking ice cream cone" ie- you have to devote more people like cooks, clerks, medics, and supply techs just to support yourself.
May I humbly submit for consideration that, in the next class of ship, we really work hard on getting the core crew requirements down, while still providing lots of extra bunks to give to you flexibility on how you employ the ship. The ship should be automated and redundant up the hoop. Everything should be designed with ease maintenance and cleaning kept in mind (lets try and get cleaning stations down to less than 2 hours/day!). Maybe, the FMFs should be alot larger, so that maintenance alongside is done largely by them (yeah, I know, we have to fix the union issue first...) or a contractor. Maybe boarding parties should become a specialty (like clearance diver) and only be embarked when needed, kind of like the Air Dept (heresy, I know). Maybe our current naval trades are not structured correctly and need to be looked at in terms of who does what (this should be an ongoing process).
Maybe when a ship sails to support a Ph IV MARS course or the FNO course, they only need a small "core crew"- the rest can be ashore on course or on leave. If you are on a fishpat, you will get extra bodies, but not as many as when you sail to the Gulf.
This is isn't meant to suggest that any of the above are the answer. Rather, I think we really need to start with a clean piece of paper when we design and crew the DDG/FFH repalcement class.
Cheers!