You've made some good points here. I'm having trouble convincing my wife to join Steemit precisely because she doesn't want to leave her niche Facebook community behind. She needs a way to port that community over to Steemit before she'll give it a chance.
I also find it requires a lot of effort to craft posts here. I spend maybe 10-12 hours per post. But then, I write long posts with carefully chosen images and spend a lot of time tweaking the formatting before I'm satisfied. The stuff I write here, I would never bother putting on Facebook which I view as the fast food of social media sites.
I don't mind the content chaos personally, as I enjoy fine tuning my feed which for the most part then makes it easy to view the content I like. But nonetheless, I would find both communities and tag following to be welcome additions to the Steemit toolbox.