This reminds me a lot of old BBSs, specifically the segmentation and even some of the post propagation through federation/etc. it seems a really brilliant way to filter content to reduce take over/bullying. Not perfect by any means, but so far impressed.
Remember folks, if you're feeling irritated about lack of access or not enough instances, consider starting your own. Encourage friends to join. Build your little world and share as you desire. I think that is where this medium will shine.
@Phancypants There is a certain amount of pressure on us as a community to try to create/encourage tools that will help the community flourish.
Examples would be:
Setting up guides on starting up instances.
Establish best practices on running an instance(number of users recommended, how to admin an instance.
Tools to minimize effort and cost to starting an instance.
At the same time I think there is enough internal pressure by design to keep on one instance.