To be honest, I can't picture "paramore" without Hayley. For me, the vocals for a band is the most important part of their music. I would still support Josh, Zac and Jeremy though even if Hayley left but I highly doubt that.
I hope this dvd isn't the Anaheim show. One, we've already seen the whole thing on FBR+ so it won't be that surprising. My fingers are crossed for new material on this dvd.