Hi @Chris-S
As far as I know there are no plans to add this feature.
With a database connection, Auth0 is the owner of the data. But with federated connections, Auth0 is NOT the owner, the 3rd party IDP is the owner. Since Auth0 is not the owner, it doesn’t make sense to “create” a user - there is no way for Auth0 to contact the 3rd party IDP and say “Create this user”.
While this is very inconvenient, it is architecturally sound.
From your use case, I think you might require a DB user first, and then allow users to link other federated identities. By linking, you limit it to the one user you initially created. Note that this linking behavior is NOT what is provided by the Auth0 linking extension, that is more flexible, and not what you want.
John