Since HN seems to be on a blog-kick lately, I’ll repost the idea that I’m still waiting for someone to build:
A blogverse of some kind that allows for algorithmic discoverability & aggregation (ala Medium) without the bullshit/terrible UX.
The real value proposition of Medium is that a well-made aggregator benefits readers and writers alike. Readers find more authors they like, writers find more audience. There are also network effects with shared comment logins, inter-blog citations, etc.
I really think a blogging renaissance is waiting to happen. These ingredients plus a business model not reliant on ads, massive js overhead, and other nonsense could jumpstart it.