When I said Terri got lucky, I meant in the sense that the HMs evicted her on Day 1, and she would never had had the opportunity to win were it not for producer manipulation allowing her to reenter the house. She was lucky they wanted her in there so bad. Let alone the whole voting thing.
As for Survivor Game Changers, I suspect they assembled a cast of returning players and then tried to think of an angle, before coming up with "game changers" as their tagline. Which would be it doesn't actually fit for many of them.
I've heard it was meant to be some sort of "Revenge, Return, Redemption" season - where they'd bring six winners back to return, six players who lost FTC/just missed FTC for revenge, and six players out earlier back for redemption.
You can kind of see how this split may have happened given some of the players that were rumoured to be cut / players the producers wanted back.
Revenge: Malcolm, Tai, Ozzy, Cirie, Aubry, Monica (cut/replaced by Brad)
Return: Tony, JT, Earl (cut), Sandra, Danni/Sophie (both cut), Nat A (cut / was going to be on GC but got replaced by Sierra)
Redemption: Caleb, Troyzan, Jeff, Sarah, Debbie, Alexis (cut)
Obviously this changed up a tonne.