i suggest you many idea for adding gameplay.
Owner transfer system :
Design a new block for adding in his base. This block can be use for create a selling contract for his house against silver or gold coins.
Transport system :
I know, you have many problems with mounts. But, play in Conan universe without a horse, a camel or others creatures, its not logic. Add small boats for travel in the river.
Trading system :
You have added money, but not traders. Add traders in differents locations, traveling and sedentary merchants.
Auction house system :
You can create a station for sell items gained in battle or created by players. Every AH stations don’t linked, if a player want buy an object, he must move to the specific AH.
New weather :
Add dangerous elements similar to sandstorm in other areas. Snow tempest, Tornados, etc
Social system for NPC :
add an active or passive system for pnj. This could set defense guards, and others just for decoration that would remain motionless. It would be nice to add also a system of social action as for the player. Be able to ask a NPC to reverence, for example, or ask her to take a dance step.