For me, the great idea behind Nostr is that identity is a self-generated key pair, which can then be used wherever you want (and the economic model, with much potentials). In terms of decentralisation, however, I'm not convinced; I find the model of the late ZeroNet, the KAD network and others, essentially DHT, far superior, because it allows content to stay alive as long as there's interest in it, and every member of the network donates a certain amount of storage and bandwidth (adjustable at will) without being able to choose which specific scrap of content to host.

In the Nostr model, in the end, even if everyone set up (as I do) a personal relay to hold their own posts and a personal Blossom server (video/images), decentralisation would still be hit-and-miss. Everyone would either have to import everything or do a painstaking job of choosing what to import just to have it available, and there's no decent discoverability, WoT is not much a thing for such purpose.

The biggest immediate problem, however, is that there isn't a single, easily hostable piece of software that includes everything Nostr is ready to do now:

- relay, Blossom server (here we have Haven, and MOAR)

- chat (not just in the relay, but as a UI too)

- short posts like Twitter/X

- long posts filterable by topic (currently only tags) to recreate the experience of Usenet/Forums/Reddit

- very long, blog-style posts

- VoIP with a Coturn server or similar

We have all of this in separate clients and relays, often semi-abandoned, sketched out and never finished, and we're missing a unified UI, just as our communication needs are unified (think of Emacs/Gnus with the idea of bringing together every text message, email, news, feeds, even Reddit and HN). All of this should be sovereign, meaning, for example, hostable on one's own relay as a single Go, Rust, or Python package, proxyable via NGINX, and potentially reachable via Tor or I2P for those behind a NAT. It's a massive job, but the reality is that everything is already there, it just needs putting together.