Change login behaviour when using SAML SSO

My idea is: Now, when SAML authentication is configured, accessing the root page redirects you automatically to the IDP SSO login page. I propose a change so that there is no redirection and instead the is a link that takes you to the IDP SSO login page. This behaviour could be turned on/off using an extra configuration flag.

I think these groups of people would benefit from this idea: Anyone using SAML authentication.

Why I think they would benefit from this idea: Being instantly redirected to the SSO login page can create confusion, leading the user to think they are being wrongfully redirected elsewhere.

Any code or resources to support this idea:

Are you willing to work on this idea?: I have a working local example while accessing /s/login directly

What skills and resources do you need to explore this further?: I would like to know where could i influence the flow so that i can override the automatic redirection.