It seems to me there was mention in a previous Dev post somewhere of the possibility of "skins". That would suit me fine. A "skin" that I could pop over my Excelsior retrofit or even an Armitage that would make it look like a Connie... with the Connie bridge pack... what would be the diff?
ZOE: "Sir! You paid money for this?... on purpose??"
KIRK: "Excuse me... what does God need with a starship?"