Pence not my first choice, but he won’t damage Trump (a VP candidate’s first job), may bring a couple states in the Midwest, and could bring the #NT people on board. He is also going to be able to help with Congress, having been there for a dozen years, and is a credible POTUS if something happens to Trump.
Newt is better as an advisor, Christie as AG to go after government corruption and root the PC out of the FBI.
I like Perry for Energy, and Palin for Interior to work together to get fracking going full tilt on federal lands.
I doubt if Palin wants anything. She gets bored. She likes doing media stuff....like....see the bear?