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.
Yes, it is really annoying that I have to go from my posts or someone else's posts first then click that "Report to moderator" button to get access to your report history. Though I'd really found a better solution to just bookmarked the page (report history) itself onto my browser but still if someone can access there report history but it isn't yet bookmarked the process will still be the same: go to a post > click report to moderator button > then click your report history.
It is just a suggestion though, especially to some people that have fonds of reporting post on their free time.
It is unnecessary when not all users can use that page.
Not all really can access that page if they haven't reached the required good posts needed but if some users have already reached it then I guess it's better for them to even have that small feature, my suggestion is that it could be optional too.
By the way, am I correct finding that error on our
"Forum Profile Information" that the Patrol page is under the Watchlist page? Not a big issue though, but it's still an error.