WaveBird 2 should have a rechargable accu.
GB player would be nice, but it will hurt Nintendo in sales if they put in one 'for free'.
Oh yeah, bluetooth connection with the GameBoy!!!

Backwards compatibility shouldn't be too hard.
And even though everybody will have a DVD player, not every kid will have one in it's room. If my N5 could play DVDs (with dolby surround sound) and MP3 and stuff, I'd sell my DVD player.
I love the DVD-eater idea.
