im in the minority here, but the castle from nwn2, i found to be great. especially since it was relevant to the story nwn2 was telling. the dynamics were great and i was always anxious on getting back to the keep for new informations , quests, upgrades, surpise visits, etc. for example: the dynamics with the amateur adventuring group(who goes on to spy for you) was great. in these scenes i was torn apart if i should send the (amateurish) group on such dangerous quests, etc. it made me feel emotions(at least for me) that a lot of the new games(dragon age 2)were not able to produce for me. i want to live in the world and with my character and not just fly over them.
So i am 100% for something similar like crossroads with the great dynamics and variety between managing your keep and exploring for treasures,items, gold, to upgrade/make better the keep and your companions. and im against something as dumbed down as the da:o camp or the horrible warden castle in awakening.
but these are just my 5 cents