Spencer
I hope we see him and Tash again at some point.
As crazy, paranoid and annoying as Tony was for most of the season, I think being that unpredictable probably helped and he played the best and was a worthy winner and it made for entertaining viewing. Even with Woo taking him at the end, Tony was happy to have Woo there because he knew he was loyal and played on that aspect right up until Woo voted.
Not sure about another Blood vs Water already, I think part of the reason it worked so well because it was a big change to previous seasons and we knew and had some attachment to returning players already. But in 6 months it will probably be great anyway.