Pretty almost everyone I encounter believes that the rewards system is broken. Indeed you see a post that has 3-4 images and less than 500 words or even just a GIF and because the one who posted it has so many followers and has a high steem power it will garner upvotes and comments each jockeying for attention hoping to get their comment upvoted and capture the attention and maybe have a new follower there.
Then you see someone who has a lower reputation. Good content about 2k words on a topic they really feel passionate about and spent two - three hours writing, pasting images, proofreading and editing before finally posting it and it ends up with cents. Having a lower reputation often means lower number of followers. Their only chance would be if they are curated or a whale is interested in their topic.
Whales make or break the posting career of an individual here. Without significant votes from a whale or a dolphin the posting value of a person is usually in the cents.
Their is a chance that their work can be curated by the various curation groups and I have known some that got curated twice in one month but then it is stated in most curation groups that it gets harder and harder to be curated once a person has been curated twice or have reached a certain reputation level and then they are back to earning cents.
It can drive even the most persistent person away from Steemit because all their hardwork and time is for naught.
Your proposal has some merits but then our assessments are very subjective. What may be interesting and score high for one person may not look like it's good enough for another and may vote for a lower reward for it.
Who makes the decisions on what is worthy? How are we to quantify it so that it is fair and not subjected to the individuals likes or dislikes?
How will we calibrate each distinct person so that it becomes fair and how can we avoid abuse by certain groups to determine that a particular posts is only worth $1 if they do not like the poster or maximize it to ask for a favor?
I know I am not helping by presenting questions rather than helping by giving answers but to be honest until now I don't know how to fix it.
If you read my post carefully you could see that "stating" that a post is worth only 1$ won't decline rewards, it will only decline the rewards you can give to it.
In this manner it makes your vote less worth depending on the total value the post will earn.