Ultimate lineup......

Thrash Band #2
Vocals-Bobby "Blitz" Ellsworth(Overkill)
Guitar-Scott Ian(Anthrax, SOD)
Guitar-Chris Poland(Megadeth, Damn The Machine, Ohm)
Bass-Greg Christian(Testament)
Drums-Marquis Marky(Coroner)

Power Metal...Kind Of
vocals-Harry "The Tyrant" Conklin(Jag Panzer)
Guitar-Kai Hansen(Helloween, Iron Savior, Gamma Ray)
Guitar-Rock n' Rolf(Running Wild)
Bass-Marcus Groskopf(Helloween, Shok Machine)
Drums-Richard Christy(Death, Control Denied, Burning Inside, Iced Earth)
Keyboards-Kevin Moore(Dream Theater, OSI)

From Beyond The Grave
Vocals-Layne Staley
Guitar-Criss Oliva
Guitar-Randy Rhaods
Bass-Cliff Burton
Drums-Cozy Powell
 
Vocals - Chuck Billy
Guitar - James Murphy
Guitar - Tommy Vitterli (Tommy T. Baron)
Bass - Dave Ellefson
Drums - Dave Lombardo

Beyond the grave?

Vocals/bass - Phil Lynnot
Guitar - Jimi Hendrix
Guitar - Randy Rhoads
Drums - Cozy Powell
 
Vocals: Dawn Crosby (R.I.P.)
Keyboards & Vocals: Monika Edvardsen
Guitar: Tommy Vetterli
Guitar: Denis D´amour
Guitar: Ian Tafoya
Bass: Ralph Hubert
Drums: Michel Langevin
 
#1
Vocals: Corey Taylor
Guitar: James Hetfield back between 89-92
Guitar: Jespter Strombald
Bass: Jason Newsted
Drums: Joey Jordison

#2
Vocals: King Diamond
Guitar: James Hetfield back between 89-92
Guitar: Jespter Strombald
Bass: Jason Newsted
Drums: Joey Jordison

#3
Vocals: Casey Chaos
Guitar: James Hetfield back between 89-92
Guitar: Jespter Strombald
Bass: Jason Newsted
Drums: Joey Jordison

Yeah, I kept the band the same apart from the vocalists ;) I'm a fan of all three vocalists though. COULDN'T CHOOSE, YA KNOW!

I also reckon it would be quite intresting, I'm a big fan of all (most) bands these guys play for, it wouldn't have to be exactly metal either.
 
Band 1

Vocals: Bruce Dickinson (Iron Maiden)
Lead Guitar: Randy Rhoads (R.I.P.) (Ex-Ozzy Osbourne)
Rhythm Guitar: Dimebag Darrel (Pantera)
Bass: Steve Harris (Iron Maiden)
Drums: Igor Cavalera (Sepultura)

Band 2

Vocals: Burton C. Bell (Fear Factory)
Lead Guitar and Backing Vocals: Zakk Wylde (Ozzy Osbourne, Black Label Society)
Rhythm Guitar and Backing Vocals: Max Cavalera (Ex-Sepultura, Soulfly)
Bass: David Ellefson (Ex-Megadeth)
Drums: Raymond Herrera (Fear Factory)

Band 3 - Ultimate Thrash band

Vocals: Max Cavalera (Ex-Sepultura, Soulfly)
Lead Guitar: Kerry King (Slayer)
Rhythm Guitar: Andreas Kisser (Sepultura)
Bass: Cliff Burton (Ex-Metallica)
Drums: Igor Cavalera (Sepultura)
 
Thrash lineup from hell:

Chuck Billy - vox (Testament)
Lombardo - drums (ex-Slayer)
Hetfield - rythm (Metallica)
Friedman (ex-Megadeth)
Brad Divens - bass (ex-Wrathchild America)

put the power in power metal

Urban Breed - vox (Tad Morose)
Kirk Arrington - drums (Metal CHurch)
Petra Hasselkuss - bass (ex-Avalon {ger.})
Wolf Hoffmann - guitar (ex- Accept) was Accept power metal or classic metal ? Fair to call them either I think...
Pete Southern - guitar (Balance of Power)

Gods of prog

Andy Kuntz - vox (vanden Plas)
Mark Zonder - drums (Fates Warning)
Gunter Werno - keys (Vanden Plas)
Jorn Viggo Lofstst - guitar (Pagans Mind)
John Petrucci - guitar (Dream Theater)
Geddy Lee - bass/vocals (Rush)

Bryant
 
Hawk said:
Oliver Holzwarth B
Alex Holzwarth Dr
Chris Poland G
Russel Allen Vo

Have you ever seen SX live ? Russell is hard to beat. I witnessed three of the best vocal performances I have ever seen at PPIV when Russell Allen, Andy Kuntz (Vanden Plas) and Nils K. Rue (Pagans Mind) all performed on the same stage. Russell doesn't miss a single note. In fact, his performance is enjoyable, but also relaxed. Nils and Andy worked their ass off to hit their notes. You could see years of practice and technique in their performances by using head/throat position and mic distance etc. Russell just grabbed the mic and sang like he were singing happy birthday to a kid or something. He made it look too easy, but it sounded great.

Bryant