I meant texturing the exterior of the apparatus bay section of the building with the brickwork of the rest of the building, for example.

How so? do you mean, like, closing the bay doors and adding a texture to that - or texturing the inside of the bay itself? Because I hadn't anticipated people wanting the latter - because props. It'd be doable in this 2K format - do you have any reference shots that could give me a better idea of what you're looking for?

Would it be possible to release a version with the apparatus bays textured?

It's the texture files. The diffuse alone is 5mb. That's why I put up both. :D

Looks great! Why is this one 8 mb though, when the other one is only 2?