There is a pull request which adds a new setting show_downvotes with these settings:

• Show (current behaviour)
• Hide (all downvotes hidden in ui)
• ShowForOthers (only downvotes on other user's posts are visible)

Importantly the last option would become the new default, which means that users wont be aware that their post or comment was downvoted unless they manually change the setting. This may be good for mental health, but may also make it harder for users to realize that their content is unpopular. What do you think about it?

Here is the pull request