Now that I figured out how it all works I wanted to give some suggestions.
1. Better dialage. The talkling is a bit underwhelming, you get no idea what is going on when you get there, and you cant really talk to anyone in the castle.
2. Followers. I was diapointed at the huntress when I took her out as my ranger because she didnt act right, would constantly say "dont touch me" or "dont even think about it" while i was trying to sneak and she wouldnt sneak.
3. Hero worship. You come in and save the day and suddenly you own the place.... Its kinda weird. some sort of corination maybe? the steward comes up and thanks you? you sit on the trone and the knight swear alligance to you, something! its just weird how the transition works.
4. Gate (@jpenton). Some sort of gate for the doors, maybe a draw bridge like in the black arrow (in-game book)?
5. Bandit raids (@jpenton). bandits that spawn outside when you show up and attack the castle. Dont think it would be to hard. just make them easy ones so people dont get fustrated by haveing to fight really difficult enemys just to get home.