I just thought of a good example, the USS Enterprise. The Nimitz was already in planning when they first started building it, yet it was some years away from being started but they still built the Big E either way. It was a costly ship to build so they only built one, even though they planned 6, even so with the Nimitz in planning they planned to make 10 anyways. Kinda funny I think, the Big E represents the transition from WWII era ships to modern. Its not as modern as the Nimitz, but more than a match for anything else out there. Its still a strong ship, its a shame their decommisioning it in 2013. Anways this is the way I see the Ambassador class, all the new tech coming together, worked out, made better, then put into the Galaxy, Nebula, ect ect