I only mention the rewrite because a touch up is apparently happening once the story is finished. I don't even think he needs that much of one. Mostly just getting more of his personality to shine through would be nice.
And realistically the one most likely to mess things up, at least on path B, is Tyson. His actions on C/D are what escalated everything to go to hell as quickly as it did. Because if I'm right about why he snuck into the forest... ugh, if he doesn't get killed Dave really should invest in that collar once they get home.
But yeah, Dean doing something courageous is the more likely scenario. Hopefully by saving someone.
I'm just so curious how B is going to end. I can see it being the path characters are about to die in comparison to A, I just hope it isn't as "kill em all" as C/D/E/G have been. Characters individually living or dying based on our choices instead of scripted has always been my dream mechanic.