My biggest questions are:

- is there a global namespace of some kind? If so, how is it governed? If not, what's the discoverability story?
- how do people who do know each other find each other? fedi's story is username search and globally unique IDs; do we keep that, expand it, throw it out?
- how do people who don't know each other get together to talk about things? if there are topic based groups, how are they named? how are they goverened?
- without inherent chokepoints at which moderation can be applied, how do we avoid new users being exposed to torrents of raw sewage when they first sign on? if there is built-in moderation of some kind, how will you appease the type of people who get mad about instance defederation? how will you solve the (very real) issues they bring up?

As far as I know, the state of the art really isn't there on any of these.

@noracodes
i've had a few ideas about recursive shared lists of blocks and endorsements

my most important idea is that a follow overrides someone being on one of your imported blocklists, so being added to a blocklist can limit your reach, but never sever existing connections.

i wonder if you could use a rating system like retroshare does perhaps.
@Qyriad