So I'll modify your statement:
You can say whatever you want about the sources but the canon reality in Freespace is that the Prometheus S was not possible without access to the new gas miners or Earth.
That's all we can say canonically.
Well if the intent is unclear I'll grab another part of the table:
; ----------------------------------------------------------------------------------
; Prometheus (only available after nebula missions begin)
;
Straight from the horses mouth.
Prometheus S = result of Nebula
Therefore no Prometheus S without:
A) Earth
B) Nebula
---------------------------------------------------
EDIT - another pet hate:
Ships getting reduced to ****ty percentages and repaired in a mission or two.
Most commonly found in so-called "Character Driven Campaigns" wherein the ship is often a starring character.
So unrealistic.
Some times, I let it slide, but other times it bugs the piss out of me,
Oh pet Peeve #3 (And this is a BIG ONE!)
The Lucifer gaining shadow-style organic regenerative abilities.
Derelict did this.
Blue Planet did this.
It's dumb.
It's not Freespace in my opinion, the Shivans have never been demonstrated to have organic ships.
Leave Babylon 5 in the Babylon 5 Mod and stick to Freespace. Shivan ships are inorganic pieces of metal that can be blown apart just like any other ship.