Generic SAML Login Provider

I've noticed that you're doing work to make generic login providers a thing, and it's fantastic.

However, you're only opening up specific login providers at a time (starting with Microsoft). This seems to go against the idea of having a generic protocol for people to use.

It would make a lot more sense to provide a generic "third party provider" button that instead uses the [saml]( protocol, which passport [supports](

That way rather than having to create a specific use case for *every single provider*, you can just create one. A SAML template that other IdPs can integrate. Most major IdPs can integrate SAML in some form or another, and it vastly reduces the work you have to do to integrate on a per provider basis.