I was thinking that a Kantian schema, produced by the imagination, could stand for a maxim in Kant's moral theory. Consider you possess the general schema of dog or bridge. This Hannah Arendt reflected in the Greek nous. Since we all possess in some general degree the conceptual form that stands in the back of our minds for all the particulars of a certain type, then it may seem logical to suggest this is true when testing out particular maxims and moving to universal maxims. I would think that someone may have already connected up Kantian schema with moral reasoning. However, one can never be too sure.
This entire thought came from reading the Kant Lectures she gave at New School.
I am going to do a literature review to see if anyone has rendered the schema a primary element in the universalization test of morality from Kant's first categorical imperative.