I think this is old news. Tenure as a whole likely costs the system more than it brings in intellectual freedom benefits. It's a fallacy to think that more experienced tenured teachers are better educators, when it's research success that got them tenure.

Jeff Selingo (http://www.jeffselingo.com/) writes extensively about how colleges are reacting to changes in demographics and technology. He doesn't think Yale or Harvard will need to change, but the public and private schools a tier below will need to. His book (http://www.amazon.com/College-Un-bound-Education-Students/dp...) is a good read for parents.