I've been rewatching all of Jet Lag as background distraction while working over the last couple weeks and have noticed something I'd love to see emphasized for a season.
I really want a season that is team vs team that includes a lot of direct in-person interaction. Almost every time teams end up together creates great moments. New Zealand had Auckland and elsewhere. Capture the Flag, though flawed, had a lot of great moments with various mixes of the team members. Japanorama had a couple good moments.
They can design a game that either forces this or encourages it. I have a couple ideas, but won't get specific here. I'm sure the team could come up with something.
A couple thoughts. Competitive challenges are great, but in most seasons with challenges, if both teams attempt a challenge, the one who loses is punished so much that teams usually avoid the situation. Giving a losing team a softer landing could help.
Doing this does require limited branching of paths, but this has worked well. And, this could bring into play geographies that don't have a widely branching system.