It's a good suggestion, but I believe the "patrol" feature is in the core of SMF, and not a custom implementation. (Correct me if I'm wrong there) I quite like where the report history is, but I guess if you wanted to check you'd have to  click "report to moderator" to see it which could be annoying. The option could possibly show up once you've reached 300 good reports. I'm not sure how many users actually have access to this page as I doubt that there's a large percentage of the forum with 300 good reports.