Perhaps. I admit I often feel dizzy, and some conclusions of conversations like that sometimes escape my attention. My short-term memory suffer from some issues I don't want to explain. Still my artistic freedom is valid in this case and any other. As Nightmare stated, my ships are "shiny" so they follow my distinctive style of modelling and texturing. MVPs are a healthy mix of Mixael's rough and specular-focused texturing, Oddgrim's pastel, digital-painted vasudans, VA's over-greebling, Sab0o's simplicity and Hades' tricky shapes. My shiny-ness contribute to the family.
While I agree that you should have some artistic freedom, what you have made here doesn't contribute so much as add noise to everything. All the Terran ships look verifiably Terran when lined up together except your Fenris. It's basically grungy gray, brown, green, and blue paint for everything else then the Fenris comes in looking like a mirror.
Which ships? Leviathan is the only PBR terran ship in current MVPs. I read Fenris as bare-metallic and in my opinion it fits to this ship. I added gray painting as you requested and I think it works. I will listen to your feedback as I used to listen others but I follow no guidelines when there are none. And there is nobody to give me such.
Ships being PBR or not isn't what matters, there's an aesthetic that each faction in FreeSpace have. For Terrans, it's the aforementioned grungy paint, Vasudans have semi-organic shapes with lots of yellows, oranges, and some browns, Shivans are dark, mechanical yet insectoid with red glows.
I really didn't want to be that guy, but I just don't think your style as is works for the Fenris. I want to see the surface detailing properly and actually get a good idea of the ships overall appearance, you've basically gone and masked any beauty it had with mirror-like surfaces.