"directly as possible" would be focusing directly on spammers and scammers instead of just blocking out legitimate folks with low post counts from one specific part of this site. i get that most of the forums on the site are conversation focused, and you may want that, but i'm personally on this forum BECAUSE OF THE MARKETPLACE, not to talk about other things…its first on my list even if it isnt on yours
i'm well aware there are other places that buy and sell, but i'm also aware that many items only get listed here as folks would rather avoid extra fees/etc. as i've said, i've made many purchases on this marketplace (more than my post count in fact).
bottom line is i personally come here to the marketplace to buy items (i normally give away things when i'm done with them instead of selling), and you are only limiting your selling opportunities by shutting out folks who are less conversational in the rest of your clubhouse