Part of the suspension of disbelief involves things making sense.
Now, some of that depends on your group.
My group wants emergency blast doors to drop down, isolated gunner's bays in case of decompression, compartmentalized system, redundant systems.
Inertia dampers/compensators.
Energy shields.
Independent power supplies.
Rated life support systems.
Computers, complete with different classes of software.
Robot assistance with battle damage control.
Distances on all 3 axis, not just 2.
My group is NOT happy with the rules-lite version presented in d20 Future.