I finished the game yesterday - I had on minor bug: the party stuck in a table and I had to reload. So FK is a very stable game, already.

Good game. The turn based combat could be a little more interesting on the spellcasting side. At the current state you rarely need to cast any buffs or anti - magic /fire /poison /frost spells.
To counter enemies spells is fun and make combat more challenging.

To make the landscape more interesting/alive there could be more non combat interaction. Pick up some flowers for potions. Meeting wandering merchants for business. Some animals for hunting …