We are very much interested in other people's inputs. No offense taken at all. That we have very few use cases is an obvious failing on our part. However, we also feel that it is a bit premature to decide precisely what the relevant use cases will be or that they be static over time. One huge win of the relational approach is that it does not require that we make these decisions now.
Indexes are wonderful things.
The second use case is designed around the needs of my RPS measurement and prediction system. NWS is somewhat similar. Basically LDAP is not as limited slides oare on the web page. Beth has looked at LDAP more closely than I have and can probably comment better on this. I think we're reacting more to the query model of LDAP than to the hierarchical schema.