From given stats, I think badges can be rewarded as:
- >=500 good reports
- >= 1000 good reports
- >=2000 good reports
- >= 5000 good reports
Did it occur to you that then people will focus on reporting?
Some will create accounts for making 1-5 posts that are reported, yay.
Many will report posts that maybe don't need to be reported.
It'll just create another problem imho.