Wait, people actually wanted him to go back to acting? We've seen him try to act multiple times before, we all know how that would go. Dude can't even make a fake smile. He's clearly best suited for supporting others, and he's happy living that way.
Because they specifically mentioned the awakening of a unique skill due to a near-death experience in the one lecture we see Cross in at school, I'm willing to bet that he had a unique skill awaken during the incident with the hydra at the beginning of the story.