Stiles is a character known for his intelligence. In this fanfiction, he could expose secrets within the pack that are being used to manipulate or control others. Standing up to the pack, he may force them to be more open and honest, which would ultimately make the pack stronger and more trustworthy in the eyes of the community.
Well, in such a fanfiction, Stiles might show extraordinary courage. He could use his wits to outsmart the pack when they're being unfair or overly aggressive. Maybe he'll stand up against their unjust decisions regarding how to deal with threats in the town.
His father could be one of the supporters. His father has always been there for Stiles, and he would understand if Stiles was standing up for what's right within the pack. Another possibility is Lydia. She's a smart and powerful character herself, and she might see the value in Stiles' actions and support him.
In this kind of fanfiction, Stiles might decide to leave the pack due to feeling constantly underestimated or unappreciated. He could go off on his own and start to develop his own skills and relationships outside of the pack dynamic. Maybe he finds new allies who value him more than the pack did.
Well, perhaps Stiles gets used as a bargaining chip against his friends. The alpha pack might want something from Scott or the others, and they think Stiles is an easy target to control them.
Perhaps in this fanfiction, the Alpha pack kidnaps Stiles because they see him as a key to something bigger. Stiles is a very intelligent character, and they might want to use his brainpower for their own evil plans. He could be held in some sort of dark and spooky lair. His friends would then have to figure out where he is, and in the process, they might discover new things about the Alpha pack and their motives. There could also be some internal conflict within the Alpha pack regarding what to do with Stiles.
In some fanfictions, the pack meeting Stiles' family could lead to a lot of chaos at first. The pack has their own supernatural quirks, and Stiles' family might be shocked or confused. For example, they could mistake some of the pack's abilities for magic tricks at first. But eventually, they might come to accept the pack and see them as an extension of Stiles' life, leading to a big family - like bond.
Well, it could go in many ways. Maybe they would be really protective at first, sizing her up to make sure she's good enough for Stiles. They might test her loyalty or her ability to keep their secrets if they're a supernatural pack.
In this kind of fanfiction, Bella might finally assert her own opinions and values against Rosalie. Maybe she stands up for her relationship with Edward which Rosalie may not approve of. For example, Rosalie could be constantly critical of Bella's human weaknesses, and Bella decides she's had enough and confronts her.
Perhaps he feels that the other pack can offer him more opportunities for growth. In some fanfictions, the new pack might have access to different kinds of magic or knowledge that Stiles is eager to learn. So, he joins them to expand his skills and understanding.
Well, Draco standing up to his parents could lead to a lot of internal family drama. His parents might be shocked and try to bring him back into the fold. But Draco, being determined, could resist. He might leave his family home and start a new life on his own. He could also use his knowledge of the dark arts that he learned from his family in a more positive way, to fight against the real evil in the wizarding world.
One way is for the pack members to stand up for Stiles more often. If someone outside the pack is giving him a hard time, they should be there to protect him. Also, they could share their secrets with him, which would show that they trust him. This trust is an important part of any relationship and would help Stiles realize that they don't actually hate him.