As for the Kanye stuff... I still remember 2008. While I'm still kind of annoyed at how the whole thing went down, I really have no issue with him coming back. The insane level of anger many people have with him being listed as one of this year's headliners (most of which weren't even in attendance in 2008) is laughable. It's time to move on people. VIBEZ, Y'all.
Still, it would be extremely funny if he comes on stage a little late, you know, to fuck with the already riled up bonnaroovians.