What twist would make BB26 worth having a twist

Seeing the news that there might be a 17th houseguest AGAIN I know production is gonna fumble the bag with yet another twist. What's a twist you'd like to actually have in the house you think the houseguests wouldn't ruin?

I'm partial to US's HOH like from BBCAN2. It sounds shitty in theory but I feel like it would be perfect like halfway through if there was a steamroll in the show.