I wouldn't police the reward pool much except in extreme cases. Each person is just allocating their share of their stake. They can't allocate your share of your stake.
I would market the hell out of the social media side, I would do away with all the talk of Quality Content and let and encourage engagement and fun
small users downvoting other small users is no big deal, where this all becomes a problem is a handful of large users picking on random people.
Those large users appear to be disappearing.
It is much more up to 'us', now.
Imo.
So, it's not ok if I set up a spam bot and self vote it all I want?
No, maybe not, but they can reduce it, nonetheless.
Join us in the bucket, follow a downvoting trail, ride herd on those that take it upon themselves to research their flags.
Or, pushback on those not doing a good job.
Plenty of low effort counterfeiting going on.
Plenty of eyes needed to keep things on the up and up.