Gabon:
Rate the season 1-10 on the winner: 5. I don't rate winners on quality of game played or anything like that, but on thematic appropriateness. Bob was suitably WTF for a season like this, but can we not all agree that Susie would have been even more so?
Rate the season 1-10 on entertainment: 8. Constant tribe switches and unpredictable players led to something new every episode, we got the most entertaining Pagonging ever (the fact that it lasted only 3 episodes counts for a lot), and the entire thing is just so unique.
Rate the season 1-10 on the cast overall: 9. Everybody brought something, and it was usually much more than the ridiculous levels of stunt casting would lead you to expect (seriously, with job descriptions like "pin up model", "Super Smash Bros champion", "Olympic gold medalist", and the like, you'd think they went out of their way to cast people who were merely interesting for what they do and not who they are, but boy was that not the case). The way the cast interacted was fascinating as well. We got a nuanced overview of the little things that bring groups of people together and the equally little things that make them hate each other, which there usually isn't a lot of time for.
Rate the season 1-10 on gameplay: 6. Many moves were made, but a lot of them had more impact on individual character development than on the overall battle between Kota and Fang. I don't really care though!
BONUS
Rate the season 1-10 on the location: 9. Beautiful and unique! Docked a point for being confined to little pre-built huts most of the time, but things like the cliffside picnic mostly made up for it.
Rate the season 1-10 on the challenges: 9. So many of the challenges made excellent use of the landscape: climbing up the hill, water polo in the lake, hillside golf, throwing balls off a cliff... good stuff!

SP: (disclaimer: have not seen the merge)
Rate the season 1-10 on the winner: 10. Not only does she spoil Ozzy's immunity run, she spoils Coach's cult leader run to the end. She also stands as the best modern-day counterexample to Probst's assertion that you need to make big moves to win: if you start in the best spot in the game, your entire job is to prevent others from making big moves, and she did just that.
Rate the season 1-10 on entertainment: 5. Start with 5 points, dock 2 for Cochran, add 1 for Brandon and 1 for Sophie.
Rate the season 1-10 on the cast overall: 6. If you replaced Ozzy and Coach with two newbies this would easily bump up to a 7, and the added focus on ignored characters (and altered bootlist) might even bump it up to an 8. Lots of good characters went home early: Semhar, Christine, Stacey, even Mikayla was vaguely rootable as an underdog. (Normally I don't ascribe to the Sucks counter-orthodoxy of women being always better than men, but this season comes really close on that front.)
Rate the season 1-10 on gameplay: 4. Some people were willing to do interesting things pre-merge, even if they were boneheaded.
BONUS
Rate the season 1-10 on the location: 6. Yet another season in Samoa, but they found a new beach with a lot of shallow water and a lot of interesting-looking bits of black detritus scattered about. It would be better explored in One World, however.
Rate the season 1-10 on the challenges: 6. I liked challenges like the maypole one, the one where Brandon wins the immunity he gives away, and the ingeniously-constructed wheelbarrow slingshot. Dragged down by the redemption duels being nearly 100% rehashes.