> there is no online tool that approaches the bandwidth of two people in a room with a whiteboard.
VR will change that at some point. Even in today's infancy, there are some VR apps that give you that sense of presence with all the other tools needed and then some (whiteboards, screen-sharing, projecting your desktop on a huge screen, etc...)
Google Identity is not going to be the right solution for integration with other AD/LDAP stores.
Really big companies will often have multiple AD/LDAP identity stores with enterprise grade provisioning systems (Sailpoint, Oracle Identity Manager) to keep accounts in sync.
This offering from Google is meant as a replacement for AD/Exchange(obviously) for companies that are mid-small. It also offers provisioning to other apps but only those that support SAML Just-In-Time provisioning. I did not immediately see a way to add custom apps to this (for provisioning), so might be limited to just the OOTB apps they provide (List: https://support.google.com/cloudidentity/topic/7661972)
Auth0 today offers SAML integrations and if the target system supports JIT Provisioning, it will work the same as google.
And just to clarify, Google's offering is 100% meant for internal users (employees, anyone that you'd give a Google Apps account to)