Absolutely lovely work, great mesh & crazy to think it's all in-game textures.
If I had one critique, I would submit that the colors are a bit wan/washed out, especially compared to the other capital ships (from the comparison image you provided). The colors aren't as vibrant as any of the other ships (even the other Scourge battleship). I don't know how much control you can really exercise over this, given your use of in-game textures. Still, felt I should point it out.