Even outside of the obvious, like in-game gear, there's a lot of issue to be had with human construction and industry. The grandest Imperial city is a left-over Ayleid structure, for example. The Orsimer have built metal cities, the Altmer have still-standing structures older than linear time, the dunmer (Telvanni) can grow a strong tower in about a month with almost no labor, and the humans are stuck with normal, constantly-ruined, stone, wood, and other simple weak structures. Why? Again, my biggest question is, why didn't the empire ever borrow from the Orcs? But there's more to it than that. The Empire had every opportunity to take the best from almost every other province, and gather them in Cyrodiil. They could've imported Telvanni spore-construction by offering research space and free necromancy licenses. They could of studied the IC's construction, and used it as a base for more of their structures. Outside of construction, there's a lot of other things they could've, and should've imported. Bonemould & chitin seems like a great material for all of the bones that the empire must produce as a waste product (I'm talking about animal bones, not human remains). They could make all sorts of stuff out of it, and yet they don't. Siltstriders are an amazing form of transportation - which Cyrodiil failed to import after four centuries.
I guess my point here is two-fold. Why do none of the human races seem to have any sort of meaningful specialized indigenous crafting traditions, and why did the supposedly cosmopolitan & integrative Septim Empire never actually seem to import and learn from the cool stuff their provinces were making?