I think that a husband or wife that is a flat character (not fleshed out with a back story and personality) makes for a poor spouse. If said spouse is to be selected from a limited number of candidates as indicated by discussions on this forum then those candidates need to be interesting. By interesting I mean that they have to have personality, style, and a background. Whats the point of another Fable spouse in a different game - one doesnt matter from another, they are all rather dull.
What Im saying is this: a feisty and dubious ample briasted barmaid would be a great wife. But after 10 minutes of real time the novelty wears off. But what if she were a spy for the bards college keeping tabs on you and you had no idea. What happens if she raises your child then her loyalties are called into question and is ordered to assassinate you. What happens when you find out and must choose to slay or spare your spouse. What if you could send her to her death to prove her love for you. What if she appeared to love you but in the end chose to try to kill you. What betrayal! What drama! What a great spouse she was, eh? Better than a flat character. Such intrigue would make her a round character, that is a spouse with depth.
What do you think?