I can't express how much I love some of the new features in Network Insight (Operations for Networks .. bleh). The new heatmap feature in ArON (vRNI) 6.8 is the simplest way to get a quick status on your vCenter and NSX solution health. It is much faster than looking at the list of Issues and filtering by solution.
I recommend reviewing the Product Tour (under Help in top-right) for additional features: the Troubleshooting feature that was demonstrated at VMware Explore looks extremely promising.