So at this point, I've got three general thoughts about Ello:
The UI is pretty terrible, although the post creation interface is nice.
The commenting interface makes Facebook look good. Between Tumblr, FB, and Ello, it's like no one remembers why threaded discussions are a good thing.
The Ello folks keep saying things like, "Privacy comes at a cost,” he said, “and some of our enhanced privacy features will come with fees."
The first two can be overcome pretty easily. It's the third (and the similar issues mentioned in my previous post) that worry me. Most companies eventually are willing to change tech and design elements (out of self-interest). But a company's ethos is likely set in stone. I'll continue to pop in and add folks back, but I can't imagine posting content here in lieu of any of the places I already post content until I see some solid evidence of a company that's got some morals.
tl;dr: Facebook, Twitter, G+, and even LJ can get away with what they are because of compelling amounts of content, features, and users. Ello doesn't have that yet.