The USN has conventions for naming ships based on class, except when it chooses not to follow them. In the case of the Seawolf class, I'm not sure that there was ever a convention.
Carriers (with the exception of Enterprise, and that name is supposed to come back for a later ship) are currently named after people. Naming future ones after people would be appropriate, but there are some politics involved with who gets a carrier named after them, and who has to settle for something else. Carriers are normally named after Presidents, but not always. They can be named after admirals, but again, not always. Follow the wrong politics or piss off the wrong people and you may still get your ship, but it won't be a carrier.
Thus, Chester Nimitz and Ronald Reagan got carriers, but Hyman Rickover and Jimmy Carter had to settle for submarines.
Personally, I think that naming one after Boorda would be a nice way of putting that whole issue to bed, but the fact that this never gets discussed makes me think that there are still some unanswered questions there that various people would rather not bring to light.
