What I think should be changed:
- Adding a corpse conservatory
Easier access to quill and parchment for noteboard using
Adding a branch of the mailing system
Overhaul of the available armours
Adding quests, lots of quests everywhere in the mines and undercity that gives you equipments and coins.
Protecting the UDW (underdark wilderness) entrance with an outside outpost
Adding lives in the city with wandering mobiles, ect
That's my first off the hook ideas.