It seems to me there is a whole line of components that would be nice to have, which would be about life supports. i.e crew quarters that either provide more crew space per metric cube, and/or better quality of life (morale goes above 100% at start) or are armored (or hybrids having 2 of the 3 parameters).
A subcategory would be about protecting the commanders, and as some ships will get up to 6+ commanders in theory, I believe that's important. So components increasing the chance the commander escapes destruction, armored command module and flag bridges, etc.
This can also be tied to a line of components increasing defense against boarding. Such components are always destroyed in boarding before anything can happen to crew, commanders. You can almost provide a feeling of 'boarding party progression' with a clever set of rules and priorities.
Top that will extra bulwarks to prevent explosion and decompression propagations. There is just a lot of possibilities about living space, saving commanders (and crew), lifeboats, and general life-savings measures.
