I don't want to speak for the dev, but have you thought about the logistics of having seven characters with four different tracks each, and every combination potentially affecting future dialogue? Dragon Age had 400 people working on it, with most interactions being less complicated and far more tangential, and they had trouble.
Oh for sure. Again my point was to praise the dev, not shoot them down. I was saying what an incredible job they've done. Stormside was a wonderful game, but in my opinion, this is far better.
Also I've not played dragon age, but I have a feeling that the 400 dev number is being misrepresented here. Having 400 ppl working on a project doesn't mean that they all had a hand in every step of the game-making process. It's much more likely that they had a team of 5-6 people specifically dedicated to character dialogue, as well as one or two for logistics between them and other dev teams, such as level designers, animators, etc. If an author and editor can write a book completely of their own making, with several compelling character arcs all converging into each-other by the end, I can tell you for sure that 400 people doing it would only be pointless overkill, cluttering up the creative process.