OK, I'll admit that Survivor cast slightly more wannabee actors and models than there are in the general population but the people cast are certainly "ordinary Americans". I want to see interesting people and I want the camera to give us enough time to know them. Now it's all about the challenges, the idol hunts and "The Jeff Show" at TC.
Kellyn was afraid of making tough decision so she chose the simple approach.
Like you, I'm sure Dom knew no one was going to run the table so why go after Chelsea. The reason is simple actually: Chelsea was much better at strategy than what we were shown.
Oh! so now you can read production's intentions! Even in the biggest disaster movies there are some stand-ins that make it to the end.