Step 1 one should be implement incentive that makes downvotes cheaper with an UI that doesn't stigmatize disagreement as being evil.

Enough with the placeholder content getting to the front-page with paid votes without a single downvote.

Agreed! Would be great though to already have a WPS to achieve this. Regardless of that, designing the incentive so it's not being abused is the real challenge here (and of course implementing it).