Great comments. I was just thinking about this today, and it would be great if Steemit could allow each user to "design" their own homepage, allowing certain features to be visible or not. For example, if they had lots of followers and were following lots of people but wanted to have certain "close" friends on their homepage for easy access to see what they're doing (similar to Google+ friend circles).
And to make a person's own blog posts a more permanent thing to see, like if you want to someone's actual blog, you can easily see what they've written. Right now, our "blog" also gets populated with resteemed stuff, so it's hard to sort through.
I'm sure (I hope) they're working on some of the more common complaints that you mentioned.
Good ideas. For all my gripes with Facebook and Google, it's pretty astounding how they've developed so many features over the years that we practically don't even notice.