It's not that different right now you're right about that. It chains that sequence of steps together and I'm not really sending any meta data about the objects pose to SD, I just leave it up to the model. But the next step here is leveraging more control-net approaches and thats when it starts to really take advantage of 3D more than just the 2D snapshot minus background.

For example, a 3D editor to allow for simple low poly style scene creation, that then serves as conditioning input to control net. For example staging a model of a chair in a sketchup model of a living room with super basic furniture elements in low poly 3D models. You pass that into SD and out comes a fully rendered image. At that point i think you could argue that stable diffusion could be used as a platform agnostic renderer like VRAY but for any 3D modelling tool.

This was my version 1 haha