So add +5% Hulks to everything, assume that every +5% Hulks equals -2% Cost/CP on average with more the more we expect the ship to be destroyed so more benefit to smaller ships and Brutes.
Though keep in mind that would also mean
less benefit than that on bigger ships.
Zephyr-A: UPR, +23% HP, +15% Hulks
Looks like it could work? Still +4% cost on average and HP is least important for Harassers, but escort so +Hulks has higher value... but Zephyr is really damn sturdy for an Escort so there is that. Probably viable I think, but I don't expect much improvement.
I don't think you get a net improvement there. Even if we set HP = Shields, and Durability = Damage, that would be 9.4% increase in HP+Shields /2 = 4.7%. But HP isn't worth as much as shields, and durability isn't worth as much as damage on a harasser. So it would be significantly lower. If you value shields twice as much as HP it's only a 5.9% increase in durability, and if you value weapons at twice durability that's a 2% increase in effectiveness.
.3*.5+.7 = .85 vs 1.1*(.45*.5+.55) = .8525 Replacement cost is actually marginally higher. The +10% gets worse the lower the base hulk rate is, which has some non-intuitive effects. Maybe it would make more sense if the 2% price per 5% hulks was including effect of saving crew?
Compared to Golem: +9% HP, +38% Shields, -0.5 Speed, +25% (better) Weapons, +15% Hulks, +11% Resource/CP.
Sold.
This feels like a poor comparison since you were already shifting to a VAOPR model. You're clearly comparing this to the current Golem, instead of the Golem-A you had designed.
Compared to Golem-D has +18% HP and +15% Hulks for +11% Resource/CP.
Probably not? Depends on if we rely on -D for Frigate duties too, which reminds me.
-D compared to -AU: -24% HP, -14% Shields, -20% Hulks. Ok, no. -D would require a -AU variant.
-DU compared to -AU: -10% HP, -14% Shields, -5% Hulks. Hm. I am not sure if such a difference is worth two variants.
The Golem AU seems the best version to me. If we were going to make a Golem D it seems like we'd be better off using a VAOPR, which conveniently would also save us developing the UPR.
Hail: UOPR, +21% HP, +25% Shields, +10% Hulks
Definitely worth it, especially since I suspect that adding those +10% Hulks on Hails already staggering Hulk chance increases its value. But even if not, still worth it.
Durability is worth less on Harass, but I do tend to agree this is worth it in itself. But I'm not sure it's worth the Tranth time it would take to develop UOPR.
Gridarvol: UOPR, +12% HP, +15% Hulks
Definitely worth it because Psy-Cannon specialist. Otherwise not.
Gridarvol-R: UOPR, +22% HP, +15% Hulks
I don't think so. G-R is absurdly tough already and not even a full Brute so we do not expect many losses. Could be wrong though.
I don't really agree with the Gridarvol being worth it. There's no increase to its weapons, so even just a simple estimate will put that in the negatives.
Boulder: UPR, +12% HP, +15% Hulks
Dunno. Probably not.
I still think USP reactor makes more sense. You can drop OPS1 for it and get +40.5 HP for 12.75 shields, which is a very nice trade. That also gets you to +20% hulks. It still probably isn't worth it, but it's closer.
I agreed with your thoughts on the other ships.
Conclusions
Definitely useful for Golem, Hail, and probably for Fissure. Some borderline viable designs too.
All the variants are used, USPR, UPR, and UOPR which I like quite a bit!
Final Judgement: Is now useful, but does not seem worth much of Tranth's beyond just resizing USPR for Golem and Stealth ships.
USPR for golem and stealth ships is my conclusion. UOPR would be useful for Hail, but probably not worth Tranth's time.
Crew survival is of uniquely lower value for Golem because of the -30% Crew trait, but still nice.
Golem crew needs are 4200, while our previous frigates had 5000. So it's only 16% relative to previous frigates. It appears without that trait crew needs would have been 20% higher than previous frigates. It's weird.
It's also the ship that dies the most, so any mitigation there has outsized effect.
There's always a chance of crit though, just like how crit on VAOPR that gave it extra +1 power (though in case of ultimate reactors I think we would most likely receive +HP and hulks).
Conversely Enerael has been assuming the +++Hulks applies across the various sizes, while the statement of Durin only confirmed that the +HP% would be across the various sizes. So the higher power levels could actually be
worse than our speculation. I've been content to assume that the +++Hulks applies because they need it, but if we're talking about possibility of things being different from speculation we need to also consider the possibility they'll be worse.