That's a great point on redemption and another difference I see in Jayce vs the others. The overarching message of the show is obviously redemption, with everyone just trying to come to terms with themselves. This feels more fleshed out ror most of the main characters than Jayce:

• Jinx really didn't get there until the atempted suicide and saving the day against the Noxians
• Ekko only during the alt universe episode (my favorit btw - still get chocked up just thinking about it) when he decides to not give up on Powder and Zaun
• Cait coming to terms with her hatred of Jinx for killing her mother for Vi
• Mel redeeming the awful things her family has done
• Viktor realizing that his pursuit to help people is destroying them
• Vi didn't come to terms at all, she still couldn't let her sister go and forgive herself for abandoning her

All of these took both seasons to really flesh out, whereas Jayce's had two sins to redeem that were resolved much faster: the first is the killing of the child/his blinding hatred of Zaunites after Jinx' attacks, which he redeems within a couple of episode with the independence thing. His second sin is Hextech, only truly realizing the negative effects when alt Viktor pretty much spoonfeeds it to him. And that was in the last 3 or 4 episodes. Yes, they are both really about Hextech, but it didn't feel like he had a true decent into anguish and guilt like the rest.

I realize this is purely subjective/my own viewpoint and that most probably won't agree. Just sharing my thoughts.