From a game design point of view, I think it’s safe to say that the Invicta Fidem simply wouldn’t fit with BFG well as a general, balanced fleet inclusion (as @Zelnik puts so well!). I wonder if just considering the Invicta Fidem as a scenario ship would be more of a useful place to meaningfully consider its balance/stats? (The Planet Killer and Activated Blackstones I gather were originally thought of like that)
For example, let’s say we have a fictional version of the (fictional) 40K universe where some crazy Archmagos actually built one of these things (e.g. a servitor bumped the STC when it was transferring data and it accidentally doubled the height of the ship) and it worked. How would such a ship function?
In terms of theme, a giant double-battleship doesn’t seem too out of place as an Imperial equivalent of other mega-space weapons (though I do think its stats are a bit powerful, and not quite fitting Imperial technology). It isn’t completely out of the league of the Ramiles or Hulks, is it?
If I were attempting to create stats for such a ship that fit with the background, these might be some of my changes:
* I think the Retros restrictions are a bit in the wrong direction. It would seem more fitting to me to have a Speed of 10 cm (and needing Burn Retros to turn at all). We know Imperials are bad at engines on big ships.
* I think the dorsal lance strength is fair given the extra length of the ship (and extra turrets). 60 cm is in keeping with other dorsal lance arrays.
* The side weapons batteries are a pretty fair representation of six battery segments, I think—the longer range explains why they’re not much stronger than the revised Retribution with FP18, 45 cm range.
* Other mega ships like Hulks, Ramilieses and the Planet Killer have less shields: I think this should, too. I’m not sure if 4 is sufficient, or if the size makes 5 appropriate (I’m leaning towards 4).
* The turret rating could be justified as 4 given the extra surface area to cover (and the attack craft help with defence)
* It does have torpedo tubes, but it also looks a bit like it has prow guns. I think it would be fair and appropriate to convert the prow torpedoes to weapons batteries or even to make it all part of the plasma lance
* The plasma lance is an interesting special weapon, but I suspect the strength is possibly too high (and I think a nova cannon, the other obvious option, would be inappropriate too). Perhaps a Bombardment cannon battery rather than a Lance battery? The short range also conflicts a bit with the long broadside battery ranges, but I think the idea is interesting, and comes with a useful caveat (though maybe that could be converted to a Reload Ordnance, and restricted by Special Orders?).
* The launch bays I think are a fair representation, given their large size.
* The broadside lances, however, I think are too powerful for what the model has: they look just like a Str 2, 30 cm lance after all. Should they be any more powerful, according to the background?
* I don’t think the Targeting Matrix is necessary, and might not fit the general Imperial distrust of technology (it’s not the Adeptus Mechanicus, after all!).
* Is 16 hits fair, given the supposed size of the PK? Since that’s 14, I could imagine this one being 14 too (though I’m not sure if that’s necessary here).
So, in summary, I’d be suggesting:
Type: Battleship/16
Speed: 10 cm. Requires Burn Retros to turn, cannot use Come to a New Heading.
Turns: 45°
Shields: 4
Armour: 5+/6+ prow.
Turrets: 4
Weapons:
* Dorsal lances: S4, 60 cm, L/F/R
* Prow plasma lance: S6, 15 cm, Front. Lance, +1 to critical hits. Requires Reload Ordnance orders to fire again. Cannot fire if on special orders.
* Starboard WB: FP20, 60 cm, R.
* Starboard lance: S2, 30 cm, R.
* Starboard launch bays: S3.
* Port WB: FP20, 60 cm, L.
* Port lance: S2, 30 cm, L.
* Port launch bays: S3.
As for points, I suspect more learnèd people than me can better decide those based on these stats!
I think the general rules for taking a Dreadnought should probably be thrown, and it should be just a unique/scenario ship like the Planet Killer. Also, its name might be more appropriately Santisima Trinidad (or a Latinised version)….
PS: Interesting ideas for the Enterprise D, @Horizon! And a generally interesting idea for a diplomatically-connected ship (e.g. a Rogue Trader), though I suspect Imperial fleets would probably be more confused than anything
