I gave steemit a try for awhile and can see now that it has a different appeal than Facebook. There is the alternate economy aspect by providing currency according to user's votes on posts and that is nice but the format isn't as engaging as Facebook or youtube.
What I would envision that could help with that is the ability to subscribe to users who can share content or have a feed where interesting users' likes and shares and posts can show. That might oppose the decentralization efforts but hey it won't be without competition. And if stray newcomers can comment on those serious contributors' posts as is already allowed then they can get a following for adding insight to show their value as content creators.
Just my 2 cents. I'd really like that good content is rewarded but at the same time need the engagement aspect to have more fun like a game than to just read article after article. I mean to interactively learn in such an informal environment it would be nice to have a way of referencing what you had voted up or somehow noted as save worthy. Otherwise there is a risk that clickbaiters and content thieves will just overrun the site unless some provision exists to prevent that.