Hell I'd like some more of the Meteora demos ala Faint, Figure.09, Pretty Birdy, Drawing. Early versions of songs we already have. Surely there are plenty of those lying around from various stages of development.
Depends on the song. Who says they have that? Maybe Mike finished NRL and they deleted Chester's vocals. All speculation and we as fans can't assume everything was saved and that every finished song is sitting on a stock of demo vocals
Seeing how they've shared tracks from 1998, I'm sure they kept seeds of most, if not all, their recordings. Exactly. I'm just stating the possibilities of tracks they can offer, but the band doesn't seem interested in giving away a heavy amount of vocal tracks atm.