They should bring KP back, but they won't. He's burned too many bridges with the blazers at the ECB, he will never play for England again, KP has a warts and all book coming out in September or so which apparently is going to blow English cricket wide open... Should be quite a read.
Prior and Cook need dropped for the next test, probably Bell too, there's really no case not to drop them. Will be interesting to see if the selectors can make those big calls.