I like what Yahoo62278 is doing better, which is to require a minimum amount of merits before even being accepted. That weeds out a lot of shitposters.
Yah, Yahoo actually initiated that method but for some time he too has stopped using that criterion. On the overall, this world is such a horrible place. People (dissidents) will always find loopholes in everything good and circumvent it. Merit trading became the order of the day while the Yahoo method lasted. Although many accounts were surprisingly nuked for that.
On the 1merited post "bill", I don't think advertisers will like it. Publicity is advertising and advertising is publicity. You don't get the needed spread and publicity with people writing just a post. You get that with numerous posts.