In the world of Dada fanfiction, it's possible that some older wizards who are starting to see the value of Dada in a new light might also attend Harry's lecture. These could be professors who have previously overlooked Dada but are now curious after hearing about Harry's unique perspective. Additionally, there could be some misfits in the wizarding world, those who don't quite fit into the traditional magic - learning environment, and they see Harry's lecture as a chance to understand a form of magic that might be more accepting of their unorthodox ways.
Other young wizards and witches who are interested in Dada magic might come. They could be from different houses or even different schools. Maybe some of his friends from the DA (Dumbledore's Army) would be there as well, as they are always interested in learning new things about magic.
Maybe it's about the wacky and unpredictable nature of Dada magic. He could be sharing some of the most absurd spells or magical concepts that are unique to Dada.
Another challenge would be keeping up with the ever - evolving dark arts. Harry has had his share of battles, but new threats are always emerging. He would need to constantly study and research to stay ahead, so that he can teach his students the most effective ways to defend themselves. Also, he has to balance his duties as a professor with his own personal life and possible future adventures.
Another challenge for Harry as Dada teacher could be dealing with the school's bureaucracy. He might want to introduce new teaching methods or change the curriculum, but he has to go through the proper channels. And there could be resistance from some of the more conservative teachers or the school administration who are used to the old ways of teaching Dada.
Another possibility is a reformed dark wizard. Someone who has seen the error of their ways and now uses their in - depth knowledge of dark magic to teach students how to defend against it. This character would have a very interesting backstory, having once been on the wrong side but now using their experiences to help the next generation of wizards in the DADA class.
Another possibility is a new dark wizard or witch who emerges and wants to prove themselves by taking on Harry and Ginny. This antagonist could be jealous of their fame and power and decides to target their DADA class to show that they are not as great as everyone thinks. They could try to undermine the students' confidence in Harry and Ginny's teaching.
The audience could be young students at Hogwarts who are eager to learn from Harry's real - life experiences in fighting dark wizards.
Well, it could be that Harry's hands - on experiences from his own time at Hogwarts make his teaching really engaging. He might share his encounters with dark creatures and how he overcame them. This could make Tom more aware of the practical side of DADA.
Perhaps it's a young writer who is just starting out in the world of fanfiction. They might be using Harry as a way to practice their writing skills and explore their creativity. They could be a student at Hogwarts in the fanfiction world, writing about their idol, Harry.
Ron could also be an ally. Even though he may not be as into the political side of things as Hermione, his loyalty to Harry is unwavering. He can provide moral support and also use his Weasley family connections to gain some support from other wizarding families who might be more open - minded.
Luna Lovegood could be an interesting choice. She has a very unique view of the wizarding world. As a DADA teacher, she would teach in her own offbeat way. For example, she might introduce the students to the idea of defending against invisible creatures that most wizards don't believe in. Her lessons would be full of creativity and would make the students think outside the box.