Umm sorry who are you?Family tribes almost never work?
What about those thousands of normal tribes that fail, all those 20 - 30 member tribes that no one knows exist, so know one knows they fail.
Family tribes just look like they fail more because they get more publicity.
Did anyone even talk about normal tribes? Family Tribes are 95% Doomed from the start. Normal Tribes have a much better chance of staying alive.
Fyi Family tribes fail far more often than Normal tribes , Just in case you did't get it
Edit: 45% Of Percentages are made up on the spot =)