It's possible to tinker with the "max accepted payout" field if you feel some people would try to farm.
That way, if someone wants to farm, they would have to ramp up posting, but that would be noticeable.
Ideally, if SMTs are already here, you'd just launch your own tokens and not worry about reward disagreement.
Yes, this is one of the ideas we have been considering.
I will contact @guiltyparties soon . . hopefully he'll entertain my request for recommendations.