I would suggest doing some investigation on the thinker A.C. Bradley. He writes extensively about Shakespeare and the modes of Shakespearean tragedy. Yet, Bradley also lectured extensively on the idea of the "tragic collision." In this conception, Bradley uses Hegelian dialectics to reflect the collision between equally desirable, yet ultimately incompatible courses of action. This is what he considers to be the ancient definition of tragedy, something that Bradley links to works of antiquity. In this, I think that there can eb another vision of what tragedy looks like and how it impacts the characterizations of protagonists in literature. It is a very unique perspective on tragedy that is distinct from other conceptions. Bradley argues that tragedy represents the agonizing element of choice and that this "intestinal warfare" within the character is where tragedy is evident. Accordingly, the tragic condition of characters in literature is one where individuals are poised between these incommensurate notions of the good. The criteria upon which how choices are made is critical in this conception of tragedy.