It's all about a fresh start really. We need to rebuild which should happen as soon as Capello leaves.
That is, get rid of the deadweight in the England team atm (Barry, Milner etc.) and start picking the promising youngsters (Cleverley, Welbeck, Sturridge etc.) as well as having some decent experience around (I'd still have Lampard, Terry and Gerrard around tbh).
Capello has been choosing some of the promising youngsters, granted, but he also continually picks players like Barry who are not the players to take England forward. Time for the new generation to come in.