Just a couple of random questions I've been thinking of.
And some random takes:
1) I think the
Excelsior program was a go regardless of what would happen to the transwarp experiment: the transwarp test ship was a fully realized combat and exploration vessel with all the usual visible doodads, rather than a barebones technology demonstrator, and Starfleet no doubt had a lot invested in it. Several might have been flying around during the TOS movies, many in fact doing their rounds well before NX-2000 because they weren't tasked with this esoteric testing.
Nevertheless, I'd like to think of the program as "experimental" in the sense that it wouldn't get assigned five hundred and fifty consecutive NCC numbers outright. That is, I'd like to think Starfleet
was doing consecutive batches at the time, but NX-2000 might at best be accompanied by NX-2001 after which there'd be this hop to NCC-2540 or something, with only about a dozen
Excelsiors around originally, and perhaps just a couple during ST4.
For the geeky fan take, NCC-2544 starts conflicting with the upper end of the so-called
Belknap strike cruisers of
Ships of Star Fleet fame - amusingly followed by a
Belknap variant called
Excel at 2545! FWIW, the next
Excelsior is
USS Roosevelt, NCC-2573, from an obscure yet onscreen TNG Okudagram...
2) I see the
Ambassador as part of the family of ships that includes the
Excelsior and a wide range of similarly sized as well as smaller ships utilizing that saucer and nacelle design. The
Ambassador is merely the big brother, the
Excelsior the medium workhorse, and the assorted DS9 kitbashes are examples of smaller designs, scaled according to their
Miranda kit parts (esp. bridge structures) rather than their
Excelsior bits (say, the saucer of the
Centaur actually has all-new portholes appropriate for the smaller size).
The
Ambassador thus doesn't necessarily have a nacelles-down counterpart - but perhaps it's the
Excelsior that does, in this family of ships. The TNG era is different in that the
Galaxy, the big kingpin ship, is the one with the ubiquitous counterpart, while the midsize workhorse may be the
Akira which in turn lacks a nacelles-up companion... If the Ambassador "really" did have a "
Miranda" or "
Nebula" to go with it, I'd think we would have seen it already, since part and parcel of that deal is great numbers in comparison with the nacelles-up ship.
We have seen way more
Excelsiors than her nacelles-down counterparts, FWIW. But we could argue one of the DS9 kitbashes is a natural "
Excelsior Miranda", even if we still can't be sure we would actually have spotted that one on screen even once...
3) See above: I don't think there was any "in between", nor any "predecessor/successor" relationship. Rather, I think these are two parallel ships in a family, preceded by the TOS movie family that has the TMP nacelles and variants of the TMP hull (
Constitution,
Miranda,
Constellation,
Sydney, the
Jupp kitbash from DS9) and then followed either by a family of angular ships such as the Steamrunner and the Saber, or then directly by the
Galaxy family (
Galaxy,
Nebula,
Akira, the Wolf 359 kitbashes). And my personal preference is for direct following by
Galaxy, with the other two ST:FC ships just random deviations, perhaps special "planetary assault" ships for the "marines" or whatever.
Timo Saloniemi