Simply put, there has been much theorizing about FF and his plans for south Slav trialism, but what if the Magyars beat him to it and cultivated the Croats from early on? The structure is already there in the sub-compromise, it puts wedge between the Croats and Serbs and neutralizes Austrian meddling. Also, Croatia is fairly homogenous and outside the Magyar language zone. I know, I know, the Magyars were obstinately chauvinistic but wouldn't this course be smarter than their historical policies? Could Bosnia have been joined to Croatia? Dalmatia even?