Personally I don't get the "must have experience at this level" rhetoric. Our two most successful managers in living memory, Jimmy Frizzell and Joe Royle, had no experience of managing at any level. Full stop. To counter my own argument I would also add that some of our worst managers (hello David Unsworth) had no experience, and it showed. So yes, experience is an advantage but I'm not sure it's the be all and end all. Experienced managers can (and do) fail, and rookie managers can (and do fail). Just depends on the manager involved.