Productivity and user experience: They fit together like a hand in glove.
An increase in one cannot be had without a positive, fruitful experience in the other. If the workflow is streamlined, and...
Almost all the vendors support OpenID Connect and OAuth 2.0. How about F5? Use cases include having the F5 authenticate users against an external OpenID Provider and the use of OAuth 2.0 to secure the F5 APIs. Even the next version of ADFS supports OpenID Connect. Tool support for OpenID Connect is increasing by the day. I don't see that kind of support for SAMLp, especially when you're in the business of hosting APIs.