Have you validated this theory against actual users?
Because I have. Users do the wrong thing. Constantly. Every single chance they get. There is no level of education that can fix it. Users don't want to do the right thing, they want it to just work with no thought required.
Every option you present to users is one additional source of support calls, frustrated users, and frustrated account managers wondering why you're making things so hard for the users belonging to customers they work with.
So my company split its authentication page in two also. It results in fewer support calls and fewer complaints to the account managers.
And for what it's worth, it works with most password managers too. Anyone having trouble with that should consider a different option. It's not like there is a shortage.
Good point, and I agree as for not putting the burden on the user, that's why personally I'd used the bloom filter approach to quickly disable password input (not remove the field) and display a short explanation for the redirect.
Normal users would see nothing out of the ordinary, and SAML users would see what they see now plus an optional explanation for what's going on.
I have received my fair share of confused calls regarding (microscopically) more arduous login processes and presenting fewer people with any change at all helps tremendously with reducing those calls.
I admit, I had some concerns about that as well. But our UX team and PMs did user surveys they believed to be broadly representative and found that enough sites are doing split logins now that our users didn't have any trouble with the change.
This might be a factor of having been done just this year. A year back, the decision might have broken the other way.
Because I have. Users do the wrong thing. Constantly. Every single chance they get. There is no level of education that can fix it. Users don't want to do the right thing, they want it to just work with no thought required.
Every option you present to users is one additional source of support calls, frustrated users, and frustrated account managers wondering why you're making things so hard for the users belonging to customers they work with.
So my company split its authentication page in two also. It results in fewer support calls and fewer complaints to the account managers.
And for what it's worth, it works with most password managers too. Anyone having trouble with that should consider a different option. It's not like there is a shortage.