...I think these are some of the most important properties that sets it appart from a spaceship.
I agree. Modularity is important. And as long as maintenance is still a big issue, building ship "space stations" is impractical.
To be realistic, space stations should have some maintenance requirements. But I'm thinking they should not require quite as much or as regular maintenance as starships, what with the latter having huge engines and powerplants to move around at high speeds, traversing through jump points, etc. Starships would be much more complicated and go through a lot of extreme stresses on a regular basis.
Also, I'd really like to see small,
un-manned weapons platforms. You know, like "Star-Wars" type space-based weapons systems. It seems
downright silly to build something like the
Jump Gate Defence "Base":
Imagine the crew of 15 sat there for years on end, waiting for their one chance to fire their 4 missiles and then probably perish. . .