The concept very similar to the Beast from Homeworld Cataclysm. As for my personal preference I think its better be as mod, its looks outplaced in vanilla game, as any other alien stuff, in this case Starsector reminds myself of RimWorld, where is no any aliens too, only hostile ancient human-made mechanoids, and personally I don't like meaty ships, like I don't like meaty levels from first Doom games. I think same role but be more lore friendly can take aggressive [REDACTED] which instead of just sitting in their systems starts actually attack core worlds for example.