The Coach nightmare is one that could easily have been avoided had they gone out and cast new people. What would have been absolutely great would have been to pick out 15 or so contestants, require family references from them, and then call up those family members and go ‘oh, yeah, by the way, would you do such a thing?’ Find 8 or so who say yes, keep it a secret as best you can, and then surprise the contestants with their friends and family on the island.
Instead, we’re probably talking about half the cast being previous losers (maybe one winner, betcha Ethan wouldn’t mind some more cash), with a scattered mix of siblings, spouses and friends.
*sigh* Least they could do is twist it and make them into paired teams until the merge. Is that a friend, or an anchor you’re sitting next to?
So what would happen if 2 of the final 3 were siblings or family members? That would be weird. the jury might just avoid them if they were so similar they could not decide.