I fail to see why you think we are in disagreement. 

My focus is only in regards to how your request may be received by the copyright holders and their likely response along with appropriate reasoning surrounding their motivations. ie: Do not knowingly and willfully expose the copyright to challenge.

However, I do hope that you obtain official permission to distribute your mesh.  It's possible that you may for the reasons I stated in an above post.  If they deny it, it will be out of a desire to adopt a standard practice of protecting against infringement and not anything specifically to do with your efforts.  That is common practice.

Good luck!  I hope they authorize your mesh.  Even if they don't, you can still contribute to the fanbase of your game and this mesh by continuing your great renders.  Who knows, maybe your work will inspire them to make exceptions?