Custom UI features

I am determining who should have access to the custom UI, and who shouldn't.  I am using version 5.7.1 Enterprise version.  What are all the things I can do in the custom UI that I cannot do without the custom UI?

• Key Performance Indicators
• Supermetrics
• View data from third-party adapters like EMC, NetApp, etc.
• Create custom dashboards

Is there anything else I am missing?

Thanks!