Acoustic renditions and covers would be awesome. But they could never go wrong with releasing previously unheard music. Though, like Ree said, I could do without the instrumentals this time. Vocals or GTFO the CD
I mean, nothing will ever really be better than completed b-sides. So if they have some, and I'm sure they do, then that's what I'd want.
Cover songs, b-sides, and demos (with lyrics, preferably) are what I want in the future. Obviously, any live tracks will be a letdown at this point.
I want a recording of Pictureboard (which is never going to happen) It would be cool if they released that Meteora remix album or something, acoustic would be good as well. I think it's likely for them to release some random demos though.
Demos/B-sides/Covers would be excellent. I don't want any live tracks that are already available from DSPs. I wouldn't mind a sequel to mmm...cookies either. shit was hilarious and better than live tracks.