Gehn is part of 233 though
Sure, I get what you're saying about mocap, it will be much harder without that being an option, but at least you have the original reference footage to work from. Honestly, I think the biggest problem in 3D game character animations is that they are criminally over acted; Myst V is a perfect example of this. Esher and Yeesha are constantly moving their head, looking around at you, making gesticulations and just generally moving constantly. I know Gehn paces around a lot, but he stops and stills as well, and especially when emphasizing a point or saying something important, stands perfectly still and makes eye contact which greatly lends to credibility.