It's pretty clear that we need muting (words and people), blocking and reporting (NIP 56). I'd also like to see a more fun "transform" feature that turns insults into compliments (someone writes "you're stupid", I see "you're the best"). Twitter is only high-signal for me because I have hundreds of people muted/blocked, and some key words on my mute list.
Discussion
We have people muting now but could definitely use word muting. Would love to see this as a feature!