Thank you, will keep an eye on it. Auth0 is definitely the closest I've seen to what my business needs (and I've spent waaay to much time one trials and demos of too many products so far).

If it would:

a.) Perform group assignment based on SAML attributes (like Okta's group rules), and, b.) "natively" support SAML Federations used in the Higher Education space (which Shibboleth appears to be the only thing that supports)

I'd sign up tomorrow and start migration of my 150k users.