Make it hard to search. From this late date, it's pretty clear that decent search let people quit linking as much, and this drove fragmentation.

Somehow make it hard to hide the fact that you're a bit.

Get rid of connection oriented protocols like TCP.

I’d kick off all the stupid people.

Pre Google, pre AOL those were the days

Hacker News is a better social internet. So are niche subreddits and discords. Trying to build a big tent for millions and billions is a dead end. There's almost nothing relevant to all of us collectively, nothing interesting and really meaningful anyway. Attempts to build that global collective culture have failed. It's all a bunch of existential screaming into the void.

Human communication and meaning-making needs to happen on a smaller level. A few hundred people with common values and ideas. People who share something with each other. The social internet is a great place to explore a common niche interest, but pretty much toxic sludge for anything else.

Verified identity?

I've always wanted to at least see a social network where everyone's identity was verified. Seems like that would eliminate a lot of the things people complain about. (Spam, harassment, misinformation.)

I've also wondered if there's a way to make it 100% non-commercial. (Maybe with government funding?) Public television was created with the idea that if this medium was going to exist, there should be one channel devoted to the greater public good (and not commercial pursuits). What would a social network be like if it didn't have to make a profit because it was publicly funded?

I've always wanted to see micro-social networks. (Imagine a Facebook or a Twitter, just for your town/university/book club/whatever.) Maybe public libraries could be involved in creating them, or local newspapers, or school journalism classes...

invite-only discord and slacks serve this purpose, or local email lists. not the most newsworthy but they're out there.

A better compression algorithm with middle-out