So... OK, infinite or nearly infinite food rations, and spare parts as well as a more detailed damage system. You can have gauges that seize working (in the X-Wing series this could be extremely crippling), light bulbs that shatter, making crew efficiency lower, oil/fuel leaks leading to a tell-tale slick on the surface that tells the destroyers where you are, clorine (sp.?) gas leaks that eat up the oxygen and force your crew to put on gas masks, and so on.
More things that can be destroyed, as well as random breakdowns. And spare parts.
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