For a future version, or perhaps as a plugin, it would be very useful to have some ways to manipulate and analyze user statistics. As someone shepherding a brand-new community, I need ways to track these things so I can focus efforts on things like encouraging new members to post for the first time, complete their profile, and so on.
As a precursor to full-fledged reporting, one thing that would be very useful would be if the columns on the Users > Member Information page were sortable, so that, at the very least, one could group everyone who has never posted, or organize folks by date joined or last posted. That would make it easier to reach out to those users to remind them to participate.
Thanks!