To be honest, i think i would have preffered a more standard form, somehow i see this hard for the developers to adapt to, but I also then think that the Gamecube controllers will continue to be used for games which are ported and better suited etc. and the fact that Iwata said this:
Thinking about packing Revolution with the main controller and attachment, Iwata says.
makes you think some more, as seriosly how is joe average going to play Fifa 0X with this? The cube controller lives on IMO