You know, I think Star Trek: The Next Generation had it about right, at least as far as interior design. I think a futuristic spaceship/station would be designed for comfort, and even grace. I don't think an interstellar vessel would be clunky and awkward, or even ugly. Basic human aesthetics don't change much, which is why we still find so many ancient buildings to be beautiful. And technology always aims for simplicity. Those simple touchpads they use on TNG are probably a good guess, though its likely that by the 24th century technology will be even simpler than that, simpler than we can guess. Direct neural interface, possibly. Of course, it depends on how far in the future you're going...

For exteriors, the same holds true. All the nurnies might look cool, but I'd bet future design will be more sleek and graceful, like the Enterprise. Again, human aesthetics should be taken into account. And whether or not a ship will be entering the atmosphere or solely confined to space is another variable.

My big gripe is the matter of materials. Somehow I don't think you're going to find interstellar spacecraft rusting away. :lol: The rusty scifi interior seems to be a favorite in the Poser world, but while admittedly it can look kind of cool, it's actually a pretty ridiculous notion. I suspect lighter, stronger, more durable materials will be in use. Of course, they may get dirty, but rusty? Not likely.

 Now, for alien ships, you have to throw out the rulebook completely. They could be ugly, bizarre, and even downright incomprehensible. But humans don't change much, and however much technology advances, you can expect that it will be designed to be as simple, comfortable, and attractive as possible.