I believe if the CM adopts a weekly post quota of 20-30 posts, the post quality will be much better than it is now.
If you keep the same payrate per post and lower the weekly quota, you won't magically increase post quality as same shitposters will stay in the campaign an the only thing that will change is amount of shitposts.
Though it may not increase post quality but I think it will definitely reduce the amount of shitposts generated in order to meet the maximum quota. If they are not getting paid for additional posts, I doubt any of those guys will be posting so much. The less posts they have to make, the more thought they will put into their posts. That’s if the campaign will prioritize quality over quantity.