About this last hypothesis, I see that the scholars who claim that Mark's genre is tragedy often do so because according to them the tragic hero is Jesus in person.
But they ignore, maybe, that the tragedy, in Mark, is especially about Peter and the Pillars. Their failure to follow Jesus is tragic, in my view, just as we would describe tragic the end of Macbeth, for example.
Mark is pauline. But read what Paul says in 2 Corinthians 11:4 :
If Mark is pauline (and he is), then he isn't following deliberately the exhortation of Paul to not follow ''another Jesus'' (because it's clear that the Jesus of Mark is his invention and was not known by Paul).For if someone comes and preaches another Jesus than the one we preached, or if you receive a different spirit from the one you received or a different gospel from the one you accepted, you put up with it well enough.
Therefore Mark doesn't inventing his Jesus to eclipse the ''crucified Jesus'' of Paul (whom, as pauline, Mark has already).
Then Mark is introducing ''another Jesus'', precisely a Jesus who comes down on earth among Peter and the Pillars, to point out their essential blindness even before an earthly Jesus:
1) the Pillars are blind (what Mark wants to show in first place).
2) even if the Pillars had seen an earthly Jesus, they continue to be blind (the principal point of Mark).
3) even if the Pillars had seen an earthly Jesus and had want sincerely follow him, they would continue to be blind (the secondary point of Mark).
The last point, the total lack of alternatives for the Pillars, is the real tragedy in Mark.
What escapes the modern reader is that, even if apparently a subtle way of hope is left for a future redemption of Peter and co (in the ending of Mark), Peter cannot overcome the fatal contradiction of an earthly Jesus: a Jesus who, by definition (being ''another Jesus'', not the same Jesus of Paul), is not the true Jesus, therefore to follow him corresponds paradoxically to not follow the true Jesus: in any case, Peter is condemned.
The point of Mark is not that Peter is free of following or abandoning Jesus.
The real point of Mark is that Peter is unable to see and to follow Jesus, even if he had wanted to do so. Peter is condemned from the beginning to not be a true pauline.
His tragedy becomes the tragedy of all Israel.