Well, a really interesting plot might be Billy Batson losing his ability to transform into Captain Marvel. He then has to find a way to regain his powers, perhaps by going on a quest that involves traveling to ancient magical places. Along the way, he could learn more about the origin of his powers and the history of the wizard who gave them to him. He might also encounter other young heroes from the Young Justice team who are initially skeptical of his ability to be useful without his powers but then come to see his true worth as Billy, not just as Captain Marvel.
A plot could revolve around Billy Batson's life at school while secretly being Captain Marvel. What if a new student arrives who seems to suspect something about Billy? This could lead to all kinds of tense situations as Billy tries to keep his secret. At the same time, there could be a villain in Fawcett City who is specifically targeting Captain Marvel's loved ones, which includes Billy's friends and foster family. Billy has to balance protecting them as Captain Marvel without giving away his identity, and also deal with the situation at school.
One idea could be Billy Batson facing a new villain that the Justice League has trouble dealing with on their own. Billy's unique powers as Shazam could be the key to victory. For example, the villain might have the ability to nullify the powers of the Justice League members one by one, but Billy's magic, being different in nature, remains unaffected.
One common plot device is Billy's struggle with his dual identity. He has to keep his identity as Billy Batson a secret while being a part of the Young Justice team as Shazam. Another is his power development. Writers often explore how he gets better at using his powers over time. Also, his relationships with the other team members can be a plot device, like when there are conflicts or when they team up to fight a common enemy.
One great Billy Batson Young Justice fanfiction is 'The Newest Hero'. It focuses on Billy's journey of fitting into the Young Justice team. It shows his struggles with his dual identity and how the team members gradually accept him for who he really is.
One idea could be that as Billy turns into a female, she has to deal with different social expectations in Fawcett City. For example, she might find that people treat her differently when she's out as Shazam in her new form.
Billy Batson joining Young Justice in fanfiction would be really exciting. First off, his powers are quite different from what the existing team has. His lightning - based powers and superhuman abilities would give the team an edge. He might also introduce a new set of relationships. Since he's used to being on his own or with just his foster family, he'd have to learn to work in a team environment. There could be some interesting storylines around him teaching the others about his powers and learning from their skills as well.
Well, they could team up to fight a common enemy. Maybe a powerful villain that neither Young Justice nor Billy Batson could handle alone. Billy could transform into Shazam and use his super strength, flight, and lightning powers in combination with the skills and powers of the Young Justice members like Robin's detective skills or Superboy's strength.
A major theme in Billy Batson Young Justice fanfiction is his moral compass. Since he's a young hero, many stories focus on how he makes ethical decisions within the complex world of Young Justice. For instance, there are fanfics where he has to decide whether to follow the orders of the team leaders blindly or to stand up for what he believes is right, even if it means going against the group. This adds a lot of depth to his character and makes for some really engaging stories.
Billy Batson in Young Justice fanfics is often portrayed as a powerful and endearing character. His ability to transform into Shazam gives him a unique role. In many fanfics, he might be shown as a young hero trying to balance his normal life with his superhero duties. He could be depicted as learning to control his powers better or facing new threats that the Young Justice team has to deal with together.
One idea could be that Billy Batson, as Shazam, has to team up with Constantine to fight a demon that is causing chaos in the city. The demon is using magic that is affecting the ley lines, and only by combining Shazam's strength and Constantine's magical knowledge can they stop it.
I think Billy Batson and Robin would make an interesting pair. Robin is all about strategy and detective work, while Billy has that child - like wonder and raw power as Shazam. They could learn from each other. Robin could teach Billy how to better analyze a situation before jumping into action, and Billy could show Robin that sometimes it's okay to rely on pure power and instinct.