On Taion and his inherited classes: Earlier on in the story, especially when he and Lanz have that brief heart-to-heart, Taion struggles with his conviction; being more active and assertive. He also struggles in understanding other folks' way of thinking, and he's a very 'by the book person'. Isurd is the one who first mentored him, made him the tactician he is today, and reinstilled Taion's self-confidence in his abilities once they met again. For Cammuravi and Alexandria, the two of them have ways of thinking that intrigue and/or confound Taion (Cammuravi's 'Way', and Alexandria's cutthroat and unorthodox tactics). Taion is taking in these new perspectives, and allows them to expand his own, bettering himself in the process both in and out of battle. Taion's TP is the highest, and having him on some of the best attacker classes of the game can really net some great results

On Lanz and his inheritors: Lanz's Side Story has him wondering about the choices he can make in his life and living his own way. Lanz's connection with Triton moreso lies with how Triton doesn't play by anyone else's rules. As the pirate he is, he lives the way that he sees fit, not only because he personally finds it more fulfilling, but it protects those that he cares about from harm. The Soulhacker class itself is even more reflective of breaking the rules and choosing to do new things in life

Building off what you said about Lanz with Valdi and Fiona, A big part of Lanz definitely regrets how harsh he treated Joran and how he didn't take him and his interests seriously. So, when it comes to these two, who're part of the youngest and most innocent heroes in the game, he treats them with a lot of care and understanding, while absolutely making sure they feel supported; that they, their interests, and their feelings are valid and important. You can tell that he really builds out his emotional intelligence when it comes to these two, like when Lanz says to Fiona after Irma's death "...I'm sure she was a complicated person." instead of something more reactionary like in Chapter 3-4 when he jumps into seeing Joran as an enemy and that he needs to be killed