Re: USS Copernicus, NCC-640 or 623?
^ If you're concerned about registry numbers, don't be. You can make them anything you want. There's no rhyme or reason to them. Whatever "Jeffries rule" may have existed, doesn't have to be binding.
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.