He might also become more empathetic. Meeting people from different eras and understanding their struggles could soften his heart. In his original time, he was often cold and distant, but going back in time could expose him to a variety of experiences that would make him a more caring person.
His sense of purpose might change drastically. Instead of being focused on pleasing his family and following the dark path they were on, he could become more interested in the greater good of the wizarding world. Time - travel might open his eyes to different values and ways of living.
Well, if Draco goes back in time, he might become more humble. Seeing the past and the mistakes his family has made or is about to make could make him less arrogant. He would realize that his pure - blood status doesn't give him the right to look down on others.
His confidence might increase. Since he already knows what's going to happen, he would be more self - assured in his actions. For example, he wouldn't be as intimidated by Snape.
With his Slytherin peers, Draco's relationship would shift. He might encourage them to be more inclusive and less focused on pure - blood supremacy. This could make him an outcast among some of the more traditional Slytherins, but also gain him new allies who are open to change.
When they go back in time, they may encounter situations where they have to protect each other. This could be a big turning point in their relationship. Let's say they go back to a time when there were dark wizards targeting their families. They would have to put aside their differences and fight side by side. This could lead to a complete transformation of their relationship. Draco might realize that Harry is not his enemy and Harry could see that Draco is capable of loyalty and self - sacrifice. It would be a very different dynamic from their relationship in the original timeline.
Azula could become more empathetic. In the original timeline, she was quite ruthless. But going back in time and seeing things from a different perspective might make her more understanding of others. For example, she might see how her actions affected her family and friends in the long run, and this could change her approach to relationships. She may also be less arrogant as she now realizes that her previous self - assurance didn't always lead to success.
His Force abilities could be different. Maybe he would discover new aspects of the Force in the past that were lost in his original time. For example, he could learn ancient Force techniques that were forgotten over time.
His relationship with Kakashi would also change. Naruto could use his Rinnegan - enhanced knowledge to help Kakashi deal with his past traumas earlier. He might also show Kakashi new jutsu or ways of combat that he learned in the future. This would make Kakashi see Naruto in a whole new light and their bond could become more of a teacher - student relationship in reverse.
His relationship with his father, Ned Stark, would be different. He could finally have a real father - son relationship instead of the hidden one. He might be able to learn from Ned and become an even better leader in the North.
His relationship with Katara would be very different. He might be able to approach her in a more confident way, knowing what they've been through in the future. He could also avoid some of the misunderstandings that happened between them in the original timeline.
His sense of purpose might also change. In his original time, he might have been fighting for a certain cause. But in the past, he could discover new things to fight for or new values to uphold. Maybe he realizes the importance of preserving certain aspects of the past that were lost in his future, and this changes his overall attitude and personality as he becomes more of a preserver than a fighter in some ways.
The storyline would change significantly. Firstly, Lelouch would have the upper hand in terms of knowledge. He'd know who to trust and who not to trust right away. This would change the power dynamics in his relationships. For instance, he could expose the true nature of some of the Britannian nobles much earlier.