I get the points for basing on battling & forums, and @
Nicholas point about community. I'd point out a lot of community activity also happens in the battle comments.
I'd put more "currency" into the battling criteria because ideally we want something like this to encourage more activity in battling, there are tons of ideas we can come up with, thinking like "achievements" from gaming consoles.. e.g:
- starting battles
- joining battles
- winning battles
- winning streaks
- breaking someones streak
- winning 100 to 0
- winning against title holders
- winning X number of battles in a day/week/month/year
- variations against crews
- variations for freestyle/written/blind drops
Just throwing out some ideas off the top of my head