I think the idea of it is cool, but it would have been nice to have a different sound instead of a squeaky thing and then a big bouncing noise followed by giggling. I mean, having a different sound play for the intro screen just by holding down a button shows detail that is so completely unnecessary that you just think: "Wow, this console truly had some time put into it, right Jim?" "Hm, hm, quite right Bill. I think its better than the X-box!" And, yeah. But, with the squeakiness the conversation is more like: "Oh my, Jim! Monkeys and children laughing!" "Oh dear, Bill. Lets pull out that old PS2, eh?"
So, am I against the sound or for it? I dunno.