Some of this sounds good and some of it doesn't. One thing that doesn't sound good is making posts that earn less than 20 steem be worth even less. YouTube is terrible for supporting small creators; Steem hasn't been. If you make the smaller people's posts worth less you are taking away one of the biggest advantages of Steem over other platforms - that is supports the little guys better than places like YouTube do.

I've personally made posts that earn more than 20 Steem, and I've made posts that have earned less than 20 steem. The ones the earned less weren't on average, lower effort or lower quality. I know this would be true for other people too. I'm not sure if this is an effort to discourage non-content and spam etc, but the fact is, things aren't upvoted / rewarded in proportion to effort or quality and this move will do little to discourage non-content and spam but will be detrimental to small creators. Steem is still a shittonne better than YouTube is in this regard, but being better than YouTube shouldn't be the standard to aim for, as that still sets the bar for being good to and rewarding small creators pretty damn low. This move is still a move in the wrong direction for a platform that is overall pretty decent to small creators.