What if at like the final 15, Probst announced a tribe swap, and inside his bag of buffs there were 7 one color, 7 another color, and 1 that was neither color. Whoever got the special buff chooses which tribe wins immunity, and which tribe goes to tribal council, they get immunity for that round and they stick with the tribe that they chose to go to tribal council.
Sorry but i think this is really dumb, it would never happen, one person would never have to decide what tribe leaves, it fucks up their game so much haha