Sounds like he'd make a pretty good moderator.
He almost certainly has a lot of interesting stories he's never told us about the time between when Madam Foster was a child and when she opened her house to the world's abandoned IF's. Did he accompany her to high school and/or college? What does he remember about her family? Was there any sort of (non-romantic) rivalry between him and her husband? I can just see the old hare going out of his mind during her teenage years!