In the fanfiction where Harry Potter takes over Umbridge, he'd likely reverse all of her actions. He'd make Hogwarts a place of love and acceptance once more. He'd ensure that the students have proper Defense Against the Dark Arts lessons instead of just theory. He could also set up a system where students can voice their concerns and ideas freely, something Umbridge would never have allowed. This would lead to a more democratic and harmonious Hogwarts.
Well, he might start by changing all the unfair rules she had imposed at Hogwarts. He could bring back the fun and freedom in the school, like allowing students to form their own clubs again.
Well, he might start by reforming the House system. Maybe he'd make it more inclusive and less competitive. He could also introduce new classes that focus on practical magic for real - world situations.
In such a fanfiction, perhaps Harry Potter could use his magic to bring about major political changes across the world. He might establish a new global wizarding order where magic and Muggle affairs are more intertwined. For example, he could introduce magical solutions to global problems like climate change, using spells to clean the air or water.
The story would probably see a big change in the power dynamics at Hogwarts. Harry would use his power to protect the students from any more harm that Umbridge - like policies might cause.
In a Harry Potter Umbridge trial fanfiction, Umbridge could finally be held accountable for her cruel actions at Hogwarts. Maybe she'd be tried for her abuse of power, like using the blood - quill on students. The Wizengamot might hear testimonies from students like Harry, Hermione, and Neville about the unjust punishments and the way she ran the school tyrannically.
Well, he might use his magic to solve Westeros' political problems. For example, he could use a spell to make the warring factions come to a peaceful negotiation. He might also introduce magic to the people of Westeros, which would completely change their way of life. And his skills in fighting dark forces could be useful in dealing with any threats in Westeros, like the White Walkers.
In such a fanfiction, perhaps Harry manages to outwit Umbridge in a really humorous way. For example, he could use his magic in unexpected and comical situations to get the better of her strict rules.
Well, perhaps Harry would go to a wizarding beach where he could practice magic without the usual Hogwarts restrictions. He might meet some new magical creatures that are only found near the sea.
In this fanfiction, Harry might go to a magical beach. He could enjoy sunbathing while his magic keeps the sun from burning him. He might also meet some new magical creatures that only come out during holidays.
In this fanfiction, it could be that Harry takes over the House of Potter to restore its former glory. He might have to deal with dark forces that have been lurking around the property, and he uses his skills and the help of his friends to cleanse it. Maybe he uncovers a plot against the wizarding world that was somehow connected to his family's house, and he has to prevent it from coming to fruition.
She would probably be outraged. Umbridge is a strict and conservative character in the original series. Fanfiction often contains ideas that deviate from the 'canon' she adheres to, and she might see it as a threat to the 'proper' understanding of the wizarding world she believes in.