Well, Kassandra is a really cool and complex character. Her story in the game is so rich that it leaves a lot of room for fanfiction. People are drawn to explore her further, like her relationships with other characters or what she does after the main game events.
Power and its consequences is a frequent theme. Given Kassandra's abilities in the game, fanfictions might explore how she uses or misuses her power. Also, friendship and loyalty are common. She forms bonds with various characters in the game, and in fanfiction, these relationships are often deepened or tested. For example, her relationship with Barnabas is often a central focus in many stories.
There are quite a few out there. For example, 'Kassandra's Redemption' is a fanfiction that focuses on Kassandra's internal struggle with her past actions. It gives a deeper look into her character. Also, 'Kassandra and the Mysterious Artifact' is exciting as it has her on a quest to discover the power of a long - lost artifact. This one has a lot of action and mystery elements.
One interesting concept could be a crossover with a fantasy world like Middle - earth. Imagine an assassin having to navigate the perils of Mordor while still maintaining their creed. Another concept might be a crossover with a historical event not directly related to the main Assassin's Creed timeline, such as the sinking of the Titanic, where assassins could be on board for a secret mission.
Writing a good Assassins Creed crossover fanfic is all about balance. You have to balance the elements of Assassin's Creed, like the hidden blade and the assassin's parkour skills, with the elements of the crossover. Let's say it's a crossover with a detective story. You can't overshadow the detective's investigation skills with the assassin's combat abilities. Also, create believable relationships between the characters. If an assassin teams up with a detective, there should be some initial mistrust that gradually turns into respect and cooperation as they work towards a common goal.
The character of Kassandra herself can make a novel interesting. If she is depicted as a strong - willed seer, her struggle with her prophetic visions and how she is treated by those around her can be captivating.
It's a bit complex to define Kassandra as simply anti or pro religion. The novel presents her with various situations that shape her nuanced views on the matter. Sometimes she questions religious practices, but at other times, she may find solace or guidance in them.
One well - known Kassandra novel could be 'The Cassandra Complex' which delves into themes of prophecy and self - discovery. It's a thought - provoking read that takes the character of Kassandra and weaves a complex narrative around her abilities.