Hey I'm starting to see what your style is. All this so far, including your Railgun Frigate, has a unified sort of nearly "concave " morphology. Not actually literally concave, although your Interceptor is, but more like leaning into concave from the Hiigaran convex more "egg-like" shapes. Like if you stopped half way between the Hiigaran convex on your way to a concave shape, the straight and often slightly negativelly curved lines would look convex in comparison to Hiigaran.
Or maybe this will make more sense. If ships were throwing knives, all your designs would be somewhat reminiscent of these:
While actual HW2 Hiigaran are these:
This is where we dissagree on the design and what makes Hiigaran. But when I stated my objections about design of your Bomber, you made a clear point about your mod being set in future, that you're not in fact making 'the' HW2 Hiigarans. Which turns something I would call unauthentic into your strength. A big one, because the unified style and the shapes you prefer clearly show, I see them in your whole fleet. You have a unified style and prefered shapes and you're very consistent with them. That's a really good trait to have. And you're not making the HW2-era Hiigarans.
(BTW I have examples of this myself. My MBC is a ship that's more Vaygr inspired and made to look cool. While my later Cruiser is purely focused on authenticity.)
But anyway, comments. I want to see that ship done, I wonder how it'll look like. Lots of guns all over the hull, like three and a half times as many. But it could work, especially if you're aiming at a PDS kind of thing.
The nose is on a right path I think. The inner pieces are good, it's just the outher ones are still distracting and are yet to be made into something less sticking out. By that I don't mean as much forward, by that I mean more subtely protruded from the hull.
Also Hiigarans have subsystems on top of their ships. But it really depends on how far from the original you want to go. If you set that your future Hiigs have subsystems on the bottom, then that's all up to you, I would just keep that design decision for the other ships you'll make too.