These decks are super awesome, impressive to fill out all 4 spheres with relevant cards. The fact that you are able to use all these guys as their hero versions are great, I absolutely love it.
Couple thoughts:
Bilbo is already part of each of the Hobbit scenarios, he's a separate hero that is passed around the table with the first player token, so unfortunately he can't be included in the 4 decks. Would definitely recommend Beorn in his place.
Tighten Our Belts is usually a pretty good card for dwarves, maybe not as important in monosphere, but the leadership deck is looking very expensive.
Dwarrowdelf axe, if you have it, would be an almost straight upgrade for Dwarven axe in the tactics deck
Hidden Cache is in the Lore deck but you have no way to discard it, I would move it to the spirit deck that is already working discard synergy with Zigil and Ered Luin miners.
its superthematic. but you may get problems with locations. you only want dwarfallies, thats great but a bit limiting. there are some little things that can help:
Explorer's Almanac 3 of them and you reduce the chance to get locationlocked
Untroubled by Darkness this powerfull with much dwarfes, with that you overcome however howmany lacations there are.
These decks are super awesome, impressive to fill out all 4 spheres with relevant cards. The fact that you are able to use all these guys as their hero versions are great, I absolutely love it.
Couple thoughts: