Another idea is that Ezra's scars are a connection to a parallel dimension or a different timeline. Whenever he uses the Force in a certain way, his scars start to tingle or glow, and he has brief glimpses into this other reality. He then has to figure out if this is a warning, a chance to change something, or a new power source for the Rebellion.
Some fanfictions might explore Ezra as an evil character through a time - travel plot. For example, he could go back in time, get corrupted by past Sith lords, and then return to his own time as an agent of the dark side. His knowledge of the future and new - found dark powers would make him a formidable and terrifying adversary. Also, an evil Ezra might form his own dark side cult within the Star Wars universe, recruiting those who feel disenfranchised by the Galactic Empire and the Rebel Alliance alike.
One possibility could be that they are from a lightsaber duel with an Inquisitor. During a battle for survival, the Inquisitor's blade grazed Ezra, leaving the scars as a permanent reminder of the encounter.
One interesting concept is exploring the backstories of minor characters. For example, in some fanfictions, they might delve into the past of a random stormtrooper, showing how they ended up in the Empire. Another concept could be alternate endings to major events in the series. It gives fans a chance to rewrite parts they thought could have been better.
In Star Wars Rebels fanfiction, Ezra's potential girlfriends often vary. Some fanfictions might pair him with Sabine. Their relationship in the show has a lot of chemistry that fanfic writers like to explore further. They share many adventures together, and this bond can be developed into a romantic relationship in fan - made stories.
The scars might make Ezra more cautious. After getting them, he realizes the real dangers in the galaxy and becomes more careful in his actions, especially when facing the Empire.
Well, in a lot of Star Wars Rebels fanfic, Ezra being sick often serves as a catalyst for emotional moments. The other characters like Kanan or Sabine would be worried about him. It can also create some interesting dynamics within the group. Some might be overly protective, while others could be more focused on the mission but still concerned. And it might be a chance for Ezra to grow in his understanding of his friends' care for him while he's in a weakened state.
Well, that's a matter of personal opinion. Just because someone might think Ezra is stupid in fanfiction doesn't mean it's a universal view. In the official Star Wars Rebels story, Ezra has his own growth and development. However, in some fanfictions, the author might be trying to explore different aspects of his character or create unique storylines that could make him seem less intelligent, but it doesn't represent the whole view of Ezra's character.
Ezra being 12 in the fanfiction could lead to plots centered around his coming of age and facing challenges with a younger mindset. Maybe he has to prove himself despite his age.
One interesting story could be about Ezra and Maul teaming up unexpectedly against a greater threat in the Outer Rim. They have to put aside their differences and use their unique Force abilities to fight off a powerful Sith Lord who is trying to take over a crucial planet for the Rebellion.
One plotline could be them getting lost on an uncharted planet. They have to rely on each other's skills to survive. Zeb uses his survival instincts while Ezra tries to use the Force to find a way back. It's a story of their growth and friendship in a difficult situation.