I see what you're getting at, Luis Dias, but here it doesn't work because it produces such a heavy imbalance in the model. The entire front section constitutes the 'narrow detailed part' and it's half of the whole ship. The 'monolithic armor slab' appearance is defeated by giving small details the same visual area as the armor slabs, and they end up feeling discontinuous with the rest of the ship. For the rear armor plates, I'm not saying we need super-dense tech greeble. Just some minor surface details that integrate the plates to the rest of the ship, because right now they don't flow well.
From another perspective, Hades has already done a magnificent job on the monolithic armor slab thing, padding each major section with a very nice amount of detail that frames the heavy armor. That's not going on in the rear section. There's no small detail to convey a sense of scale, unlike the front sections.
Perhaps some small trenches outlining the different plates. That's at minimum what we need, because the rest of the ship uses them so heavily and then you get to the rear sector and everything suddenly starts flowing together with no detail spacing it out.
EDIT:
Hehe Enioch you ninja'd me.