Yup, this NZ fare bucket change is a major hit for me too (and really appears to be a troubling nail in the coffin of what I see as a huge work around for the obscene US-SPAC business class fares). The similar AC change is not a big one, everytime I have looked J/C/Z were all set at the same number on AC. The NZ change is a big loss. I guess with SQ we are already in the bottom business class bucket so it can't sink any lower!