I think the divine hiddenness arguments weren't just that God is hidden, but that one might expect a 3-omni God, or 4-omni God if you like, to convince those who are receptive. It's a lot more complicated actually, but this is the main thrust of Schellenberg's book. It's also called the argument from non-belief, relating to people who are willing to believe, but don't.
There is a much older tradition of hiddenness as well, going back to Jewish literature - in fact, even 'why hast thou abandoned me?' can be included here. And then the dark night of the soul, and people like Mother Theresa, who describe their lack of experience of God.
Nietzsche expressed it pithily: "a god who is all-knowing and all-powerful and who does not even make sure his creatures understand his intentions — could that be a god of goodness?"