How anyone can read Josh Farro's twitter and still think he's a good guy is beyond me. He's a hateful nutcase and his guitar playing is seriously nothing to write home about. I will never understand why people were so heartbroken over his leaving. Zac on the other hand...He's an example of real talent.
losing zac was a way bigger loss than josh, imo. josh has written some amazing songs but his playing on stage was more and more half-assed towards the end of his time in paramore (ie listen to him play the ignorance solo as opposed to taylor) and his onstage demeanour just made watching them awkward when it was so obvious he had no interest in being there. the only songs from BNE that leapt out at me as being a step up musically from riot! were the ones taylor helped write.
imo taylor has always been a more skilled and creative guitarist than josh, he just needed to work on putting those skills into writing. i'm keen for what he's come up with for this record.