Pieter, one more thing: I know that a lot of people don't like that HWBot is so inconsistent. Most benchers bench maybe once a month and therefor need a lot of time to deal with the changes of the bot.
Chaging the benchmarks every 6 months is way too much. Most just handled the change from rev4-rev5 within this year.
rev5 should be the last revision for now. I know that progress comes along with changes. Still you should tune HWBot to be more consistent.