You should be able to access Quarters on your ship, if anything, make you buy a piece and occupy it "Personal Quarters", and then deck it out with models of ships, medals (ranks) etc, etc...
maybe allow someone to buy "Personal Quarters" on a station, you can fill it with whatever junk you want, just no perma storage for anything, anywhere, place junk where you want and enjoy the view, lay in bed and logout, log in and get up the next day or whenever.
Could be an excuse to suck up a little bit of cash from the galaxy...
1 million for a small 2 ton cargo space, or maybe spend 30 million on a 16 ton Suite, with plenty room to stretch out.
maybe you are the weirdo that would blow 200 million on the 128 ton Super Luxo Master Suite ... with a hot tub... just so you can really get blasted to smithereens while soaking in it ...
then when they have multi crews ... throw a party ..
spend a BILLION to plant a base on a planet, and launch your ships from there ...
spend 40 n\billion for a small station outpost style ...
spend 200 billion for a bigger station ... still small, but you can park bigger ships at it.
just a money pit/sink.
no storage other than your ships.. and either have a pilot bring you a ship to your station, or take a friend, have him pilot your ship to it.
to get all your ships in it..
or have them taxi you out to get your ships and you can bring them home, get taxied out, to bring more "home"
purchase an asteroid and have it "stationed" out.
I don't see it breaking the game... just filling space with junk.
maybe you should have some rules about where and whatnot you can have something put in.
as far as Stations go, there needs to be some thought done on it. within the habited universe, you will need to supply it with TONS upon TONS of building materials, once you have fully stocked it up (you don't get them back) then they can build it.
but it should be a huge chore, with tons of stuff , maybe even have to be in a power play at a certain rank and duration to be considered as well. Only station in the system, who knows... think about it.
but as far as living quarters on ships or a station, I see no harm at all in it.
just a money sink.