Really great for testing big guns!!!! Lots of room to take multiple shots. The only good way to improve (or modify) it would be to add shields or different armor thicknesses across the length, but at that point you may as well make dedicated test hull featuring those improvements.
Very nicely constructed. Utilitarian, but also has an industrial aesthetic to it. I tried testing some of my weapons against it, and suffice it to say I'll be using the armor layering and much heavier weapons on some of my future builds.