(Forgive the bizarre abbreviation of spoilers in the title; ran out of room).
Basically, there was at least one table in WiHR1 that pretty much gave away the fate of the Carthage--it was a script regarding Apoc torpedoes veering away from the target and self-destructing...when the Carthage surrenders. Whelp, I found that rather ironic all those months ago, and I knew it wasn't some remnant of Delenda Est given that there were references to Narayana torpedoes as well, on top of (IIRC) a mention/hint of a Solaris-class destroyer.
On a related note, I was quite wrong about what the Supernova#atmospheric and DropPodEffect table entries would be for...though I'm quite glad I am, as I thought it was going to be Mars getting meson-bombed in-atmosphere with drop pods landing in Martian cities, ODST-style. Good thing it was just a gas refinery in Jupiter...so far.
Oh, and I finally find out that the Vindicator is the Custos-X, and that the Arquebus is meant to be the main gun for it. Two mysteries solved in one swoop. Then the first in-game use of capship flares, I think, in that same mission.
That said, did the Carthage really have four million HP in Her Finest Hour? It didn't really seem like it...but it's quite possible she was taking artillery fire the whole time and I was too distracted to really notice.