Everyone already has a lot of localized control. That's how America, and most individualized states, are set up. I assume by control you mean representation. Are you arguing that the representation within the state isn't good enough? If so there are other avenues to fix that problem, such as changing the state legislature where most of the laws that affect the day to day lives of Californians come from, to be more representative. I can't see how creating five new states solves any control or representation problem.