The central ships in the New Frontier novels are the Galaxy-class Excalibur-A and Trident. “Indistinguishable from Magic” and “Rough Beasts of Empire” centered around the Galaxy class USS Challenger and USS Robinson.
The
Galaxy-class
U.S.S. Venture is also depicted in TrekLit and the canon as a prominent starship: leading the task force to protect Deep Space 9 from the Klingon Defense Force in 2372 (DS9: "The Way of the Warrior"); participating in Operation Return and the First Battle of Chin'toka (DS9: "The Sacrifice of Angels;" "Tears of the Prophets"); escorting the Trinni/ek delegation to the Federation in March 2380, and then serving as the Presidential transport for Nanietta Bacco (possibly assuming the call sign of
Starfleet One, depending on whether you want to imagine that practice from a
Myriad Unvierses timeline as happening in the Destiny-verse) when Koa is inducted into the Federation that December (
Articles of the Federation); and leading the defense of Andor in the Borg Invasion of 2381 (
Destiny: Mere Mortals; A Singular Destiny).
In addition, the
U.S.S. Galaxy herself has a prominent role, though this has more been emphasized in the canon than in TrekLit: participating in Operation Return, the First Battle of Chin'toka, and the Battle of Cardassia (DS9: "The Sacrifice of Angels;" "Tears of the Prophets;" "What You Leave Behind"), and being assigned to the Starfleet task force whose mission was to rendezvous with the
Enterprise to intercept and destroy the
I.R.W. Scimitar (
Star Trek: Nemesis).
Consider:
Currently, 24th century trek lit is in the early 2380s.
Galaxy-class development began in 2343. The 1701-D was launched in 2363.
Sovereign-class development began in 2365. The 1701-E launched in 2372.
Where was it established when development on the
Sovereign class began? I think it's far more likely that development on the
Sovereign would have begun some time in the late 2350s, given the long design time it took between beginning development on and then launching the
Galaxy.
Sovereigns are a smaller and more modern design, no doubt requiring less time and resources to build. Presumably, Sovereigns are not family-friendly ships like Galaxies.
Wouldn’t you expect Sovereigns to supplant Galaxies as the dominant front line heavy cruiser and feature more frequently in trek lit then be replaced by Vesta-class in the coming years?
Well, no. The
Galaxy class was explicitly designed to be adaptable and to serve as major ships of the line for decades, with a projected operational lifespan of around 100 years, and they were in production for ten years before the
Sovereign was.
And we've seen a lot of
Sovereign-class starships in TrekLit, too, including the
U.S.S. Sovereign (
A Singular Destiny), the
U.S.S. Musashi (
A Time to Kill; A Time to Heal; Destiny: Lost Souls); and the
U.S.S. Republic (
A Time to Heal). Further, the unseen starships
U.S.S. Saratoga (DS9: "Wrongs Darker than Death or Night") and
U.S.S. Destiny (DS9: "Afterimage") are depicted as
Sovereign-class starships in the video game
Star Trek: Armada.
So, including the
U.S.S. Enterprise, that's six prominent
Sovereign-class starships (four in the novels) and six prominent
Galaxy-class starships (again, four in the novels). That sounds about right to me.
Frankly, I'd expect to see them in about equal numbers, with
Galaxy-class starships perhaps being more generally assigned to diplomatic and humanitarian missions, and
Sovereign-class starships being more generally assigned to combat-oriented or defense missions.
I think the
Vesta-class is unlikely to ever appear in large numbers, because of the relative scarcity of benamite crystals. The
Vesta, I would imagine, would play key roles in task forces that require speed and the projection of sudden force across vast distances, but I don't think they'd ever be capital ships.
Meanwhile, I'd expect to see
Luna-class starships continuing as the primary long-range deep space exploration ships, to see
Akira-,
Defiant-, and
Intrepid-class starships as the main supporting ships in defense and science, and
Nova-class starships as the main support research and scout ships (replacing the
Oberth-class starships in that regard).
Would you like to see refit Galaxies like the future 1701-D from “all Good Things” in 2380s trek lit? Consider that this alternate universe Enterprise appeared around 2395. It was warp 13 capable which could theoretically be due to slipstream drive.
No, I think it's clear that "warp 13" was just a more advanced form of standard warp drive, and that the Federation in the Destinyverse has advanced beyond the technology in the "All Good Things..." future.
ETA:
Just out of curiousity, how does everyone imagine the bridges of these Galaxy-class ships in Treklit? The minimalist TNG series look, or the upgraded Generations version with extra stations and background crew? Or the variations we've seen in various alternate realities and possible futures?
When I'm conscious of it, I try to think of the bridge from GEN. Often I mentally revert to the TNG series bridge without thinking about it -- even when reading scenes set aboard the
Enterprise-E!