There was a "movement" in the late 70s or early 80s called structured system design that basically advocated for this approach (though 100% human). You may wan

There was a "movement" in the late 70s or early 80s called structured system design that basically advocated for this approach (though 100% human). You may want to pick up a book or read more about it, as it outlines approaches and things to think about when splitting things up so much.