I think Danger would be awesome in this game. He would also make a pretty cool looking character in the game. Who would you want to see?

Aaahhhhhh: Danger, Sebastian and Kavinsky.
 
Some Crookers and Beetroots as well. Hell, as long as they put in more electro this time around I'll be super-excited.

Armin Van Buuren, Armand Van Helden and Kavinsky. A good mix and stuff that actually seems like it would fit the DJ theme.

More Justice and some remixes BY Justice.

Daft Punk is all I need. 
In fact, every character should be Daft Punk.

Kavinsky and Breakbot would be nice.