This proposed "like" might likely not be used by admins, or neither shall it determine ranking, but it should just be a mere appreciation for a quality post when merit is lacking.
What about "dislike"? I mean, if you want to have "like", why not to have dislike too, seeing so much bs being written all over the place. I know that de-meriting was proposed too, but that would probably be too drastic, but dislike would be nice addition, especially if post that gets enough dislikes get hidden, so something similar to reddit.