Who do you propose though? We all know Aaron North is not happening, and I don't want a "Pino Palladino of guitar players" to join the line up. A NIN guitarist should be shredding and going crazy.
Maybe Josh will be reinvited, to which I can't make any comments, because I don't know his style of play when he has the spotlight. But personally I want a new face, if we won't get Finck - whom I still dig.