I didn't read all of the comments in the thread but I can say I would much like to see a section specifically for 3D design.
The fact is, until you get to the final stages of editing (exporting and such), most modeling and animations in games are completely the same, besides some small differences in lighting, particle data, the like, and having it spread across 5-6 game sections doesn't make much sense to me. Not only does it make the sections messy, it gives less usages for someones release. I know day after day in the GunZ section, we receive people asking generic questions about modeling programs, when really, it has nothing to do with GunZ at all. Due to the fact that there is no other section in which we can answer it in, we accept the thread and just take it for what it is.
I am personally majoring in Graphic Design for the sole purpose of 3D design, and I can tell you now that it is completely different from 2D design after a point. Basic Photoshop tutorials may help you, but once it comes down to it, no 2D artist is going to know one thing about "Normal Maps", "Bitmapping", let alone all the different texture types there are. The differences vary so much that I was kinda surprised that there wasn't one period.
It would give me much joy to learn from others that have much more experience in this field, and even though I am a beginner by many aspects, I would help as much as I can.
If website design receives its own section, when it practically is just a collection of Photoshop work, I do not understand when a completely different art type, literally not in the same dimension as normal graphical design, can't.
Anyways, that's all I have to say, I hope you can reconsider Mental o.o.
Edit: If lack of material is what you fear, I can tell you now that just in the GunZ section, model releases happen at least once a week, and we have well over half a dozen tutorials specifically dealing with 3D modeling, and that is just our silly section. We have the ability to make models for well over a dozen games in this forum, so lack of material will not be an issue.