I propose that Aether allows for easy navigation between communities.
When a user is browsing a given community belonging to a given list, Aether could display in a navigation pane its parent, sister and child lists & communities.
In particular, that would allow for easy navigation between the communities of a given network (like reddit’s ImaginaryNetwork).
A community’s admin (or moderators?) would also be able to display communities from any list they want using a dedicated tool.
That way, they could suggest other communities that are similar to their community by maintaining their own list of similar communities, just like they do on reddit, except that they would have a dedicated tool for that instead of relying on their sidebar or their wiki. Having a dedicated tool would also allow for the sorting, grouping and filtering operations normally available in other contexts.
What do you think?