Filtering out resteems would be great.
There's also people who post wildly different types of content (and many per day) and sometimes I want to filter out specific tags I want to see. For example, I might want to see their travel blog and crypto advice, but filter out their political spam.
Seeing your current Voting Power and how much it's worth would be great
If I highlight a post author's name, it would be nice to see a quick popup with some of his most recent posts (so I don't have to open a new window). I think this would help with people getting impulsive follows (less effort to verify that they make good posts)