Navigation menu items could be better ordered by similar purposes and most used (you probably have tracking info for this, I'm just guessing based on my usage). I think even more could be done to better layout the dashboard, but I'll stick to just menu order in this post.

It would make sense to put Self Customer below the Customers menu item in navigation instead of at the bottom as it groups similar items and Self Customer has settings that affect all customers, as does Global Tools, which would now be directly below it.

Billing

Audit Logging

Scheduled Reports

External Notifications

Admin Users & Teams - Staff likely doesn't change or need editing often, especially with SSO/Azure AD integrations.

Integrations, API Keys - Can go to the bottom of the list as it should be rarely needed after initial setup.