I'm of the opinion its not about wholesale changes; England need to play more positive cricket. They appear to have a good blend of accumulators (Cook, Root, Ballance) and strokeplayers (Bell, KP, Prior, Stokes). It's all about a state of mind and showing intent, as England did in 2005; we'll score runs at a rate and have top quality bowlers who will take wickets at pace. Lose the 'attritional' cricket and start taking the game to teams. Smashing a young Indian team in the summer would go a way to redressing the Ashes embarrassment...
For me, even considering leaving out KP is ridiculous. You simply have to find a way of involving him. Having him on the periphery during the Ashes was crazy. Play to his ego, treat him like a star and he'll win games. I believe Flower should be retained, if only for the lack of options, but he needs to introduce a new mentality and strategy and needs to find a way of working with KP and fast.
If I had to get rid of 1, it would be Flower. He can't win games from the balcony.