Gilder, did you have SWTOR in mind when you made this post?
Oh, and when a portion of the ship goes dark, maybe make it so that the affected conducts damage to the nearest hull quadrant, or acts as an increasing damage multiplier, and aesthetic-wise, maybe have it so it looks like the portion has exploded, but the deck is still there and the components are broken beyond repair.
Also, for the gunner turrets, might I suggest something such as a set of gunner controls, that controls two turrets possibly? Say one gunner could get on at a mounting hardpoint where they would use the controls to control each together, maybe by default:
First Turret
W: Pivot Gun Upwards
A: Rotate Gun Left
S: Pivot Gun Downwards
D: Rotate Gun Right
E: Fire Gun
Second Turret
I: Pivot Gun Upwards
J: Rotate Gun Left
K: Pivot Gun Downwards
L: Rotate Gun Right
U: Fire Gun
This would allow for the gunners to make themselves useful, where they could also have a vantage point separate from the gun, which could be limited in turning arc to the approximate gun arcs of the turrets, and would also allow for a separate "Gunner Deck" where each gunner would be able to fire turrets mounted on the ship, say control one turret on each side of the ship, of which there would be a total of four turrets, and the gunners would require communication if they wanted to exploit the turrets in a bifecta, as they would have a degree of overlap. This separate mounting hardpoint from the gun hardpoint could also have a backstory, say "Captains want to keep their gunners safe, and not as targets, due to the value of an expert gunner, thus they developed a system allowing for gunners to control their guns separate from the gun itself."