I first started watching Survivor in 09. So I watched all of the seasons like 2 years ago. All-stars I would say is worse than One World.
Yeah, Cirie was a phenomenal strategist and manipulator. I would say easily the best manipulator the show ever had. She dominated Exile Island, was one fire making challenge away from winning the entire thing, in FVF she dominated again more so than Paravatii and would have won if were not for the last minute twist of making the final 3 to a final 2 and in Heroes vs Villians it took a tie vote and an idol being played to take her out. Cirie is definitely a top 5 player. In FVF, she took out Ozzy, Jason etc. She basically ran the alliance.
In Boston Rob's first season he got screwed over by a tribe swap, in All-stars he dominated from start to finish and lost, because of a bitter jury, his third time Russell Hantz with the help of Paravti (2 top 5 players) took him out and in RI he dominated from start to finish like he did in all-stars. His all-star and RI games rank among the best ever.
I have no idea. They might change it up from how it was in South Pacific.