I'd love a filter to reduce the number of questions with 0 upvotes in the 'interesting' feed. Most stuff in that feed is obviously not interesting (0 upvotes, plenty of views, no answers, older than 30 minutes, reputation Better filtering options would be helpful. I'd love to review unanswered recent questions by reputable users. I don't care about seeing questions with 0 upvotes, older than 30 minutes and more than 20 views. There is currently no good way to list these. You either end up with questions from years ago that had lots of upvotes but no answer or an endless list of low quality crap that was recently modified or asked.
I've pretty much disengaged from even looking at the Stackoverflow feed of new questions because the signal to noise ratio just went out of the window in recent years. There's a lot of signal dropping out of these feeds because of all the freshly signed up users wasting people's time.
Stackoverflow has plenty of ways to earn reputation but no good ways to filter on that. IMHO fixing that is the answer. The site needs a more efficient way to get rid of the obviously crappy questions (and the people asking them) because the volume of both is just killing engagement currently.
For answers, I think the existing up/downvote mechanism works fine though the site could maybe do with a bit less passive aggressive style moderation/commenting. The way answer sorting works, the good stuff ends up on top anyway. So there's less of a need to intimidate people that are trying to be helpful but failing for whatever reason because their impact is less high. I tend to bias to being grateful somebody took the time to read and answer my questions even if it ultimately is not that helpful.