I think the exterior looks pretty damn cool and a pretty big improvement over the past version, but the interior could really use a lot of work. Especially since there is so much space inside of the ship that isn't utilized or could be better expanded. The colors are right for the most part, but the shape isn't as recognizable. The Blockade Runner actually has a lot of circular doorways for example, your ship is mostly square hallways. But I commend the fact that there's things like faux escape pods (if you're some kind of wizard maybe you can actually make them detachable?)
If you're basing this off that cross-section like I think you are, it's faithful in some areas, but lacking in others, particularly the front pod. You might be able to slim up some of the corridors as well to shove more in.
I'd actually rate this closer to a 3.5 than a 4 honestly because it has underutilized potential, but has a really solid base in its exterior.