Yes, if they're going to have the hidden immunity idols, just have ONE at each camp and once it's played, it's gone, no re-hiding it. Esp. when they do an episode like heroes v. villains where they've all played the game before and are supposed to be "the best".
Russell has lied to everybody, telling each one of them that he's taking them to the final 3 (except for Candace - I think he only promised her final 5).
I'd like to see Sandra make it to the final 3, although I doubt she will since she's not in any alliance. She's the only person who has the game figured out: she knew from day 1 that Russell was in charge of the villains, after the merge she told the heroes that Russell was in charge, only they didn't believe her. She switched her vote last night once she realized that Candace had flipped. Sandra may be terrible at challenges, but she's got brains. And I don't think Sandra lied to anybody (except for switching her vote) to the extent Russell and Parvati have lied.
Like a PP said, there's something about Sandra that I can't put my finger on, but I like her.