Your supergroup...

[antijoke]

Rock:

Freddy Mercury - Vocals
John Deacon - Bass
Brian May - Guitar
Roger Taylor - Drums...

Oh wait...

I both see what you did there, and like what you did there.

 

[Sinny]

Vocals: Jack White
Lead Guitar: Kirk Hammet
Bass: Cliff Burton
Drums: Keith Moon
Keyboard: Rick Wright

I don't think my ears could handle it though

 

[Neoni]

Ronnie Vanucci - Killers Drummer (Best drummer in the world, in my opinion)

actually killers with a better singer

 

[lsg1r]

Male Vocals - Ai (Deathgaze) and/or Josey Scott (Saliva)
Female Vocals - Sharon den Adel (Within Temptation) and/or Maria Brink (Beautiful Tragedy)
Guitar - Brian Carroll aka Buckethead, plus slipknot guitarists
Bass - Michael Peter Balzary aka Flea (Red Hot Chilli Peppers)
Drums - Gene Hoglan (Fear Factory)
DJ/Electronic - boom boom satellites

I've ignored dead artists and this is more a case of who I can remember as I'm sure there's other options who might even be better, pretty sure there are better options but it's my personal taste after all