Enable full lifecycle management via SAML. The current implementation only support JIT provisioning and only sync's the email address. A full solution would support the ability to map the other fields identified and help enable automated full lifecycle management. The current solution only creates the users account when they access it the first time and won't sync updates about the users profile.
The specific SAML IdP I'm interested in seeing support for is Okta, however the other major platforms should be able to benefit from the same solution.