prospecting is one thing, but the skills to extract things from underground safely are quite another. But deep miners leave such lovely tunnels for the next hundred years to dungeon crawl in.
if you are going to have rivers or seas nearby, a special form of artisan is needed to build your ships, boats, ferries, etc. This also opens room for several kinds of fisherman, as well as sailors to operate them.
On scribe, I did not see that as part of the magic system, just a public service for the majority who do not read or write.
service "professional"s would have a true reaction roll, at least. While the surface must be friendly, the amount of helpfullness would depend on one's impressions. Voluntary information is optional.
I am not sure if you want to look at skills for tactics or strategy, or allow the players to provide that.
Transport is another gap I see. Somebody has to drive the carts/wagons, pack horses from town to town. Carter, Wagonner, Teamster, (Smith, Carpenter, and Leatherworker for support)
robert