The abilty to make a list of your favourite topics and only see posts from them.
Not only would this help you find the posts that interest you most, it would improve curation as people would feel more invested in their own topics.
Also will be much easier to see the posts that use bad labels and they can be flagged easier to clean up steemit a bit.
Thanks for the input today, keep up your good work on here, you are making your mark for sure.