What could really make a difference is enabling swarms.
They have elements of communities, but I think of swarms as purpose-specific and potentially impermanent.
The most interesting part is that a lot of the individual and privacy stuff “drops out” of thinking about it that way.
For instance, people will want it to be Bring Your Own Identity, so… you will need something like DIDs.
You will need individual privacy, because these can be temporary, so you don’t want a bunch of randos getting your entire history.
And so on.
I think a better way to put it is that the individual is the wrong abstraction, because it doesn’t lead to design choices.
A community with any sort of permanence is a bad approach, because they are already served by things like Slack, Discord, Twitter, etc. This is a counterpoint against Cabal, which is only architecturally decentralized.
Swarms are organizationally decentralized and currently done purely ad hoc via Twitter, reddit, etc., with all the disadvantages those services have.