I guess, to put it simply, what I want is to ensure that my AI partner gets a certain set of traits and dialogue choices. As I understand it they get those things from their personality, and the personalities given do not seem to provide the full range of trait combinations.

ALF's information showed me where to place the name and keyword of a new personality for character creation, I think, but I can't find anything that associates traits/dialogue with the chosen personality.

I suppose it's also possible that I'm simply entirely incorrect about how this all works.