Consoles generally have several restrictions in place regarding mods, so that doesn't surprise me at all. Some may be for technical reasons, while others are simply imposed by the corporations owning the consoles. Having official mod support and modding tools is great, even with their limitations and restrictions it will most likely be a boon for the community at least on PC.
Also, I wouldn't call a race/class/subclass mod cosmetic, since it can alter gameplay drastically.