PolarRaven,
You are correct, not all 51 original points are still attainable. For the Mentors, I have them on my tester Fame Box that I linked. 1 point for being a Mentor, and another for publishing a book.
I am not trying to get all 51 points. I realize that is impossible. I am just trying to figure them out/provide information for people to use on their family Wiki pages if they so wish.
As far as I am tracking with my own research, the two mentor points are they only ones that a current player could not get. However, I have 3 points that I have no idea what they are for, and I honestly quite doubt that there is a fame point for having a high skill in every skill, so I think those are just placeholders for more points haha.