Well, a popular trope is the body - swap - for - a - mission trope. Sometimes, in the fanfiction world, female superheroes swap bodies to go undercover or complete a task that their original body couldn't. It's a great way to add an element of mystery and strategy to the story. Another one is the body - swap - accident trope. It could be due to some wacky science experiment gone wrong or a magical mishap. This often sets up the whole plot as the characters then have to figure out how to reverse the swap. And the friendship - deepening trope is also there. Through the body swap, the female characters can better understand each other on a deeper level, strengthening their friendship in the process.
The identity confusion trope is really big in female superhero body swap fanfiction. When they swap bodies, they often struggle to convince others that they are 'themselves' in a new body. It can lead to some really comical or tense situations. Also, the power - adaptation trope. If a non - superpowered character gets a superhero's body, they have to quickly learn how to control the powers. This can create exciting story arcs as they either adapt well or make a mess of things. And then there's the love - interest exploration trope. Swapping bodies can change the dynamic between a female superhero and her love interest, leading to new romantic possibilities or challenges.