ED Orgeron out at LSU. No 2 goes down and rankings shake up!

Ed Orgeron is officially out at LSU. What does that mean about the coaching search going forward and who will emerge as the top candidate? Iowa loses and deservingly drops in the rankings but why is Alabama still so high up there with a similar level loss? Is that fair? Why are the rankings done with so much pre built opinion about teams? All the conference races in the power 5 are shaping up to be very exciting.