All these supergroups are a bit small for my liking. Better more musicians who can play what they want to play with the guys and girls who suit the track best. I'll stick to the living....
Drums: Mike Bordin (Faith No More), Bill Ward (Black Sabbath), Brann Dailor (Mastodon)
Bass: Flea, Les Claypool (Primus), Tina Weymouth (Talking Heads/Tom Tom Club)
Guitars: Dave Navarro (Jane's Addiction), Billy Gibbons (ZZ Top), Kerry King (Slayer), James Hetfield (Metallica), Josh Homme (QOTSA), Geordie Walker (Killing Joke)
Keyboards/Vocals/Guitars/whatever else they fancied playing: Trent Reznor (NIN et al), Al Jourgensen (Ministry et al)
Keyboards: Aphex Twin, Jean-Michel Jarre, Ralf Hütter (Kraftwerk), Alec Empire (Atari Teenage Riot)
DJ: DJ Shadow
Vocals: Iggy Pop, Shirley Manson (Garbage), Till Lindemann (Rammstein), Mike Patton (Faith No More), Nivek Ogre (Skinny Puppy), Debbie Harry, Jaz Coleman (Killing Joke), Chuck D [plus all of the others who do vocals]