If the programming would have cause a delay, I could understand that, given they needed a major holiday game. No, it would not have been simple. The levels are loaded with different objects that require codes beyond the base platforming code. I'm guessing Peach's dress would have to be written for all of that.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs








