Nope, not at all. for the GL, for example, the original one (the one in Descent3) used 20 maps. I didn't really want to mess with that many maps, so I just used Modelview and make captures of the top, bottom, side and back view, plus one for the engines intakes. I made maps out of these screens and then applied them where needed on the model. to place them right, I just play with the UV mapping gizmo placement and size. I do this for all my models (exepted the modelview part, I could do that only for 3 ships, the other maps are all done from scratch and with good use of real material scaning -I usually scan lots of things, from an old rusty electric engine to my own arm lol- and maps grabbed ftom other sources)