Forum OpenACS Development: Response to Some 4.X questions, and comments, including adding wizards to the package spec and complaints about subsites

It sounds to me like relational segments will be useful for sites
with complex, interrelated permissions. Dynamic publishing (for
a large site) and knowledge management strike me as two
areas where there are potential benefits. Another example might
be in a large community with many groups and sub-groups. For
example, in an educational setting, it might be useful to be able
to have a student registered as a member of a class workgroup
and be automatically parented into the class and added to some
larger academic community discussion group. (It would save a
lot of clicks for admins.)

That having been said, it doesn't sound like sites managed by a
relatively small number of people will see any real benefits from
the more complex system.