I'm curious how the Carthage is going to play into the next campaign, considering the player (and the Wargods) could have destroyed its entire battlegroup. The 2nd Battlegroup could now consist of nothing but an Orion.
EDIT:
Anita Lopez doesn't seem like the type to go on after that either.
I don't think Lopez has much of a choice, unless she resigns (which I think isn't allowed in the middle of an operation) or defects.
The ships of her battlegroup were at least damaged badly before they jumped out, so I see no problem with them just not appearing in WiH2. Wether they are destroyed or rotated back to GTVA terretory for repairs, matters little to those in Sol, unless the come back repaired like the Imperieus.
You could even make a point of the surviving ships being reassigned to anti-shivan patrols or peacekeeping in quiet GTVA sectors, after repairs being finished, to recupperate from the stress of nearly being wiped out and seeing so many of their comrades die or get captured in the wargods' last assault.
While the GTVA did come out on top, it was still a costly victory for them.