CREA doesn't...That's not collaboration, really. Wat. o_O
Someone else said William Orbit, and I've had that fantasy for a while. Holy chit.
Others on my wishlist are Trent Reznor, and my weird pick for a song she would convert to an Ayu-rock-smash would be Revis' "Seven." Oh man, that would be hot. But it's so obscure and the chances so slim that we'd be hit by a deep-impact meteor first.
Seven