It would be a magical thing, it would be p2p and use relays so thin clients can connect to it, it would be 100% anonymous via onion routing and also allowing tor, but at the same time, somehow, it would handle spam (maybe by generating some cryptographic token somehow?).

It would also support storing and distributing files inside the app which includes HTML pages in a p2p IPFS fashion, so it could be used as an alternative to torrent. So like, besides communities you could host HTML pages, and those pages could contain links to films, and series and stuff.

And maybe several models of communities, so you could create a reddit/lemmy style community, or an youtube/peertube style community which would host videos.

Also DM part of the app would have very strong e2ee support groups and calls.

So I guess it would be an everything app.

And ofc it would be free both as in price and freedom.

Now I realise that the codebase would be almost impossible to maintain and such a complex program would probably have too many bugs including security bugs which would defeat the purpose. But it’s an entertaining thought.