What's more funny is that you could go LL/ML turret with 1 extra SHS for the same weight as your PPC WITHOUT minimums. Also adds more damage profile. While it may not be cool, it would be cost effective if she had an ICE engine... slower yeah, but more logistical. Also have you looked at a possible LRT in the Turret for non-frontal snapshots? I can see a variant that drops a Infantry Bay ( 3 ton ) for added LRM-5 w/ ammo for indirect light shore support missions.
TT
Yeah, LL/ML is the same weight profile, personally, for naval engagements I prefer the reach and punch of the PPC rather than closing to ML range but it's definitely a variation worth considering.
An ICE version would be very different - with no built in HS the PPC would have to go and it would lose some speed. Personally I would design an ICE hydrofoil from the ground up rather than making it a variation on this one. In the timeline/AU this design is for fusion engine availability is fine cause if you're building an SFE hydrofoil you can build the engine
I can absolutely see a fire support variant, I would add 3 LRM 5, 2 tons of ammo for some serious ranged firepower. Downgrading the PPC to 2 ERML and the 6ton bay to a 3 ton bay make space for it - not sure about spaces but if I run short then an extra ton of bay can be sacrificed to make the 3x5 into a 15.
You're probably right about the turret LRT. My mental image was to stick the torpedo tubes underwater but it would be useful to be able to fire those LRT sideways and backwards