If the reunion rumor is true...it will probably be Corgan, Jimmy Chamberlein(drums), and replacement sfor D'arcy and James Iha. Billy Corgan wrote almost all of the material...D'arcy is now a lost crackhead and James Iha's only function was to stand up onstage and look like a junked out fairy(and play the simpler stuff Billy wrote for him). If Billy wants to play the old music (and maybe some new) with Jimmy and some new folks...its still pretty much the same. This isnt like current Guns N Roses with only Axl Rose...Izzy Stradlin, Slash, etc were actually important parts of GnR, the Pumpkins was all Billy and his whacky friends.