What I'm not happy about is that Larian failed in properly communicating the "missing" features before the release. They did so for the missing day/night cycles but not for the other stuff (AI personalities, more companions, mega dungeon).
I will concur with this statement. While I'm not exactly miffed about it like some others, I do recognize this nevertheless. My best estimation is that they simply overworked themselves to finish the game, and some details (like the dungeon and the companions) simply fell by the wayside when it came time to update the KS backers.
It's not an ideal situation, by any means, but it is understandable. Their primary focus was finishing the game, and so they didn't give as much thought to informing us about the changes they were making. Hopefully, future endeavors that involve KS will be handled more smoothly. Perhaps Swen can hire/assign a KS project manager to maintain the communication properly.