This is a dumb question, but is "mastered" anything more than a synonym for "fully upgraded"? The ship list in-game says that the premium/cartel ships are "always considered mastered," which makes it sound like there's some kind of special benefit or distinction to being mastered, beyond just having all the upgrades. Is that the case, or is that line about "always considered mastered" just meaningless and/or archaic?

^ What he said.

Was about 5 seconds from finishing KDY, haha. Nice.