Second and Third Generations back off limits
My idea is simply this: to prevent people who are not directly related to your parents/grandparents from making changes to these people, let's make them off-limits.
I don't know about anyone else, but when I come onto FS and see that someone has made a change to my mother's information, or her parents, it's very disturbing especially as I know all of my siblings (there's only 2 living) and I know of all of my 1st cousins on both sides of my family. None of them would be so presumptious as to change where any of our relatives were born, what their middle names are, who they married or when...
Please let me know what you think.