OK, you probably aren't goint to want to hear tyhis, so chances are it wont be acted on, but I don't think you can really get a proper joint species look without making some custom textures. With the V textures, it'll be more like they've taken a Terran and a Vasudan ship and just welded them together somewhere. If you modified some of the V texs however, you could achieve the effect. EG. The occasional terran metal plate with lights and stuff replacing one of the Vasudan scales. Scales covering half a texture, and metal covering the other half, but with the separation line following the contours of the scales. Pipes and metal tubes coming over some scales.
It'll take longer, but really send home the integrated nature of the ship.
