The original plan was for the orbital complex to be the trade station. I built the regula/375 model as the orbital complex (all three were basically the same studio model. just redressed, and re-scaled). The same texture is used for all 3 models. However, there were 2 problems. One the orbital complex is the same size as the regula station (minus the extra modules). So it is way too small to be used as a major trade hub. Two the orbital complex's poly count was way too high to be used in game. The model wound up being almost 10,000 tri's even with all my optimization tricks, and nonsense. If you built one at every planet your puter would become a space heater. I know mine did 
There are just way too many curves on the model to make a decent lower poly version.
The original orbital complex model is being donated to the Star Trek: Excalibur project.
Remember what i said from day one when the mod was in planning. The poly counts on mod ships, and structures cant be much higher than the vanilla sins ships they are replacing. Same with the texture resolutions. We have some room to play with here, but not very much, and we dont want to go overboard with triangles. In fact we plan on rebuilding some 3rd party work to lower the poly counts. We want the mod to be playable on any system that can run vanilla sins. At the same time we are also going to re-build some models to bring them up to sins standards. Some ships/stations are from the original SoA mod, and have very low resolution textures/models. They will all be re-done, but we want to make sure everything work in game first.
the 375 varient is a much larger station scale wise, and fits perfect as a trade station. Plus its canon 
