There was a third view.
The advocacy of the Lecompton Constitution for Kansas undermined this third view, and forced Stephen A. Douglas away from the South. It convinced people in the North that the third view would not work. One hundred and fifty years later, blog writers are still distrustful of the third view, because it is viewed as a rhetorical device to make slavery OK, and to make it permanent. George McClellan, West Virginia, and Kentucky represent this third view.
After Antietam, for a variety of reasons, including pressure from Britain, Lincoln had to abandon the third view.
He laid off George McClellan, and the hard war began.