*palms his face*

Why is everything illegal? Seriously? So are there any modders out there who want to take a stab at recreating the Dwemer meshes?
*I'm not a lawyer or anything, but this is my understanding of it*
The issue with transferring game assets is that they are only licensed for that one game. Lets say I'm making a game. I may hire a third party company (perhaps a modelling company) to make a couple game models. While other models are made inhouse. They could have a separate license for every single thing, but it's FAR cheaper and easier to just license everything as a whole. However, in doing so, people often want their stuff only licensed to one product. This allows them to either get hired again for the new product, or at least to be paid again for use of their creation in a new product.
The result is that most game assets are licensed to that one game, and in using them in others, you aren't exactly stealing from Bethesda directly, but from the freelance companies that they hired to help.
That's all, really.