I was wondering the same thing. Almost done with Velen and I want the Wolf set, but figured I'd only get to Kaer Morhen until much later. Maybe the wolf set should only come in superior and mastercrafted versions or, like the others, it should be scattered around the world. After all, when Salamandra broke into Kaer Morhen, they likely stole and sold all sorts of things like recipes and, why not, armor diagrams.
So... is the starting armor a dead end? I upgraded it to warrior's jacket but I guess that's it.
One last thing: I think a better approach for the wolf armor (or a future DLC) would be to have a great witcher-esque looking armor and weapon set that you actually customize, depending for instance on who crafts it for you or what components you use, or both. Pretty much a modern version of Raven's armor. This way we don't have to choose between either bonuses or looks.