@RadiatorSpringsRacer great post. I agree with everything except the Indy series poised to dominate. Indy racing has has a lot of the problems that NASCAR has (ratings decline and boring races).
With NASCAR and Disney, most people see the problems and have ideas for the solutions, but entrenched powers prevent progress. With NASCAR, the track owners prevent major changes to the schedule and track selection. Most people would love to see more short track racing and another road course, but ISC and SMI do not want to lose any of the dates or 1.5 mile tracks they already have.