Actually finding content that is personally interesting to me. I have my Facebook feed tailored to my interests, and it does not consist of posts from personal profiles. It consists of posts in common interest groups and pages of people and businesses who produce content or products that interest me. This also provides me with some idea of how to target an audience with my own content.
This level of customization and targeting seems to be difficult to achieve in this platform. I would love to see the layout improve to the point where our Steemit is our business and designing that business includes plentiful dynamic options, as apposed to hunting down interests and hoping to find a targeted audience.