I get your point but that takes like forever for our environment and as you can imagine its so hard to create reports when you have to consider 4 different sources.
My current reporting is already based on LDAP queries, SQL Queries to event_db, vCenter exports and View exports.
The thing is that the event_db is supplying such a nice feature with the concurrent connections entry per day.
We will switch to vCOPS with view 6. Lets see if that is offering what it needs here.