I like the military chevrons. Maybe instead of the same but different colours you could just get an additional chevron each time you move up a rank like I believe they do in the military. Ie one chevron for 300 good reports, two chevrons for 1000 etc. More could easily be added as needed as well.
Like these:
(300 good reports)
(1000 good reports)
(5000 good reports)Done, the internet detective looks pretty good on smaller size, i kinda like it.
And the meme
.
Cool. And the meme
. (300 good reports) (1000 good reports) (5000 good reports)