Whoa.
Fairly surprised you're still referring to that as a Heavy Cruiser, what with all those upgrades. I'd note it as a Battlecruiser at least.
It seems a bit OP and boring to me. .5 shields, 3 decks, no ship system, 4 medium missiles, and 14 small energies?! I mean, geez...
Its a total conversion:

Thats a standard "Heavy cruiser" loadout in the mod. All ships have more weapons but they are smaller and generally fire less often, creating a staggering "barrage" type feel to combat. An onslaught, for instance, has over 20 small weapons (24 off the top of my head), 9 medium weapons, 4 large weapons and 2 flight decks alongside an accelerated ammo feeder. Oh and 4000 armor and 40000 hull.
It can still be killed by swarming destroyers with frigate support pretty easily though

(verified in dev-mod simulation tests)
The ship system for this skin in particular isn't in yet, Still a W.I.P because that one may require custom scripting like the new fast missile racks did and I'm not sure if I will use one of the new systems instead to save the considerable headache that can potentially present. Plasma Jets in particular seems like a good fit if I want to make it a raider. But sci-corps are more exploration/defensive so maybe fortress shields to further cement the civilian-esque defensive siege style... I don't honestly know yet.
Fighters are smaller/weaker, way faster and far more numerous. Anything cruiser and above usually has a few flight decks. Its like they are extendable "weapons" to provide long range fire support and missile interdiction with a different resource bar than flux and with different mechanics involved. That's why the new update is required before release.
So its not really OP when positioned against the spectrum of the mod.. but if using Vanilla weapons and fighters ohh yes haha that would be crazy. Assault weapons don't even generate flux in my mod. Only strike weapons, fire support weapons and certain powerful ship systems.
Its all very different and won't be for everyone for sure, but its closer to what I personally enjoy in both visual and tactical styles. (would be too long to explain here and this is off topic enough as it is

)