I wouldnt mind having 2 episodes a week. Say a monday night episode where they have the reward challenge, and then the hook at the end is who wins immunity. Maybe the monday night episode could just be a half hour. Then the thursday night episode could be all the plotting and scheming around who gets voted out.

This would accomplish a few things:

1. More episodes of survivor.
2. They could spend more time showing us the survivors, their personalities, camp life, strategies, etc. This way there would be no excuses to have invisible castaways on the show.
3. They could keep the challenges and tribal council the same length in terms of airtime to win over casual channel flippers, but then also give the die hard fans more of the strategy and more in-depth editing, so it wont be so obvious from the beginning to peg the 2 or 3 people who are likely to get to the end or win.

It would also help if they cracked down a lot more on spoilers getting out. We knew Natalie and Alexis went on the family reward before the first episode aired....