Hmm. In my little perverseverse, the Constellation
is a through-deck cruiser, similar to the ships of that designation in Ships of the Star Fleet
. The registry NCC-1974 would be back-to-back with the through-deck cruiser registries from that book, too!
Essentially, though, it would be another way to circumvent the Organian peace treaty. It would be an all-new four-nacelled capital ship, similar to the three-nacelled dreadnoughts, but built under another title and treaty quota, with a few trivial characteristics (numerous but very shallow shuttlebays) to pay lip service to the treaty definition of that quota. Essentially, a sneaky way to get more dreadnought-style prime combatants even though the treaty sets a limit and the Excelsior
program is badly delayed.
Sure, she's also as fast as this type of technology can make her, and there's something to using her for reconnaissance like in the Sternbach backstory. And this is indeed how the "series production" ships, those that no longer have "CD range" registries but rather 2500 or 2800 range ones, are designated and justified.