Yeah, it does seem that whenever you fly the bigger ships, that the surroundings outside appear to reduce in feeling of scale. There's probably a few things at work there though that causes that. One being that I think your reduced proximity to other things outside when you are in a larger ship, plays a large part in that. The cockpits of the bigger ships can themselves be quite big, added to the increased distance from things outside due to the size of the ship, means that the finer detail of what you can see outside the cockpit window is reduced, especially in VR. Add that to your brain's lack of familiarity with the scale of the vast majority of the objects you can see in the game world and it all makes things harder for you to try and grap how big the things are that you are seeing. It doesn't help when a lot of the art assets are kind of stylistically oversized. So the ships look a lot like the kind of thing you can relate to from sci-fi films, TV programs and other games, when in actual fact they are much bigger than you think. So the Eagle, at first glance looks like something the size of an X-Wing fighter from Star Wars or similar, but really it's like 3 times the size of an X-Wing. It's the oversized cockpits and canopies, that make ships like the Eagle for instance, look more like current contemporary jet fighters in terms of size, when in fact they are very much bigger. That runs pretty much true for all the ships in the game little and large. So when you see one fly past in a station, it's really hard for your brain to grasp just how big that ship is, for it to then calculate just how big the rest of the space around it is. So when it sees an Eagle or Viper fly by, it sees it and relates it to what your brain knows and thinks it's just like a little jet fighter, which then makes everything else around it feel smaller too.
Some of the assets I think are just wrong in terms of scale anyway, like the doors, gangways and railings at the space station docks for instance. Even if you use the external free cam to try and position yourself at something approximating human height down on the platform, some of it still feels a bit off, but it's about the best you'll get for really getting a feel for how big everything is. If they are doing space legs, then I expect there will be some redesign and proportioning of many assets.