You'll note that the city view in R:TW was a re-use of the tactical battle city model & camera, just with a bunch of random people walking very randomly dropped in. That's a relatively cheap trick using existing art & code.
I'm sorry to say that Starfarer has no such art to show the inside of ships so the cost of such a feature would be huge. I won't speak for Alex, but it's simply not a reasonable thing to do from the standpoint of rationally allocating effort to the game's development. That said, I think the notion of making Starfarer a little more ... hmm, personable? is indeed a reasonable goal. But I've got nothing more to say on that subject 'til Alex makes such things happen.
