So, for comparison purposes, who in this thread has played much X4?
That game has elements of "walking around in ships and stations" - but the only things that actually have models are the landing pads, cockpits / bridges / offices / bars, and elevators. Where for offices and bars, think 'one room with a short stretch of corridor outside leading to the elevator'. All other doors are locked (even if the door is glass and you can see stuff inside), all other areas are inaccessible by Insurmountable Waist High Fences or the equivalent.
So - even though the stations / ships should be large, there actually isn't all that much to see. It certainly presents a solution to the problem of how to walk around a gigantic space station - you just block off everything but a 'travel pod' the size of a large closet and things connected directly to it. It works, but it's kind of a let down.
I'd love Space Legs to exist, but if that was all we got, I'd question whether it was worth it. X4 has gameplay elements specifically designed around that feature, and I still question whether it was worth it...