luceos True, but I think about the flarum UI rather than the technical details of OAth and SAML.
Correct me if I am wrong but when I start to develop an SAML extension now I have to repeat the exact same code of twitter-auth (like hooking in the login dialog etc.) dispite the fact that my button will label SAML instead.
So my idea was to provide a Single Sign On meta extension which provides standard buttons, forms to activate and configure different OAuth providers options etc. To bring SAML support to that kind of extensions would mean to only implement the technical details of SAML backend but not reinventing the wheel in terms of UI.