I like this idea in broad concept!
db0 mentions the threativore bot, which i am unfamiliar with, but I presume it does something like tally up up/downvotes on comments and posts?
If so, you could have like a best comment, best post, maybe most wide reaching kind of metric...
Then yeah, that's neat! Kind of an automated attempt at a 'bestof' type thing, on a rolling basis.
However... there may need be some kind of filtering or other, more complex rule system you might want to apply to this... as it could easily create a sort of positive feedback loop, where one super poster type person is just ... always on top.
(cough probably stamets cough, lol)
You could maybe say one particular user who wins the title, well, they get put into a sort of reserve roster for, I dunno, the next 5 weeks, so they can only 'win' once every 6 weeks, tops, and then the bot/algo defers to the next person who hasn't recently 'won'.
Presumably, if you wanted to bot-omate this, you could make a bunch of different categories or scores for 'awards'.
But again, ... do this kinda thing too hard, or in the wrong way, and ... well now you've just gamified posting/commenting, and that's how you build a hivemind, so... yeah, that would probably not be good.
And also, conceivably, you could basically do the inverse, and make something like an 'AntiCitizen' category, worst comment/post of the week, etc.
... I am guessing that might be a bit... more controversial suggestion though, lol.