Dear Hive account@crypto.piotr,
I appreciate for your sharing about this valuable issue.
At first steemit has to release a new hardfork. Because steemit users do not keen on sharing after last one.
Let's come to downvote,
in my opinion downvote should not decrase the post value. Of course some sharings may contain totally opposite thoughts. But there is a big exertion in every post. My advice is: downvote should not decrase post value, but after %50 of vote number is downvote than steemit may erase the post. Other more logical adoption might put into action.
Thank you for this valuable post.