No, but that sounds like something that should be in a Feature Request!
We have had requests to use "containers" (groups, AD groups, etc) in reports, but so far adding them manually is the best we can do.
Some customers with crystal reports have used things like text files to join as "lists" directly, but using Crystal might be more of a pain than maintaining a manual list
Multi-tenancy isn't really something built into LEM right now, I didn't see a feature request on that either but we are tracking it internally. Lots of customers are deploying an appliance per-customer/site where they need that level of reporting and alerting autonomy.
Looks good! But why TOP 10 column shows only 4 articles?