P&Os big ships - Are there too many cabins?

The rumour mills have been buzzing recently with the news of P&Os new superliner due for launch in 2015 and speculation has been rife as to what extras P&O will be adding onboard to make this ship 'extra special'.
Anyone who regularly reads my blog will know that I absolutely love the big cruise ships; Oasis of the Seas, Independence of the Seas, the Celebrity Eclipse and their like. One of, if not the only reason I love these ships so much is that there is always so much to do onboard, with loads of features that you just don't see on the smaller cruise ships.