Some great tropes are 'soulmate' trope, which gives a deep connection between them. The 'undercover mission' trope can be exciting, as they have to pretend to be something they're not. Also, the 'mentor - mentee' trope, where one of them guides the other in a certain skill or aspect of life.
Well, the 'road trip' trope can be really good in Alycia and Eliza fanfics. They go on a journey together, facing different challenges along the way. The 'time - travel' trope is also interesting, as it allows for different settings and interactions. And the 'unlikely allies' trope, where they have to team up despite their differences.
One great Alycia and Eliza fanfic could be 'The Unlikely Bond'. It's about their characters meeting in a post - apocalyptic world and having to rely on each other. Another is 'A Shared Secret' which delves into a mystery that only they can solve together. And 'Friendship Beyond Time' where they are somehow transported to different eras but their connection remains strong.
One great fanfic could be about them going on an adventure together in a post - apocalyptic world. Maybe they start as rivals but gradually become friends as they face challenges.
People are drawn to fanfics about them because it gives an opportunity to create new storylines in the universes their shows are set in. It could be a way to continue the story after the show has ended or to just explore different 'what - if' situations. For instance, a fanfic could be set in a time before their shows started and show how their characters' paths could have crossed earlier.
Eliza could be a writer herself who likes to analyze and 'cut' (edit or revise) other people's fanfics to learn more about writing techniques.
One of the best tropes is the 'Angel and Human Bond'. It shows the unique relationship between Castiel, an angel, and the human Winchester family. Another great one is 'Redemption Arc' for Castiel, where he tries to make up for his past mistakes. 'Soulmate' tropes are also popular, imagining Castiel having a destined connection with someone in the Supernatural universe.
The 'enemies - to - lovers' trope is popular. They start off with some tension between them which gradually turns into love. It makes for an exciting read.
It could mean that Eliza is someone who edits or shortens fan fiction. Maybe she's a beta reader or an editor in the fanfic community.
One popular trope is the 'opposites attract' among best friends. For example, one friend is super outgoing and the other is shy. Another is the 'unbreakable bond' where no matter what challenges they face, their friendship stays strong. There's also the 'shared secret' trope, where the best friends have a secret that only they know and it either brings them closer or causes some temporary trouble.
The 'Healing Each Other' trope is also popular. Credence has a lot of emotional and magical turmoil, and Newt, with his kind heart and knowledge, helps him heal. In return, Credence's vulnerability makes Newt more open. For example, in some fanfics, Newt helps Credence come to terms with his Obscurus side, and Credence makes Newt more in touch with his own emotions.
The 'team - up' trope is always popular. Whether it's Spider - Man teaming up with Deku and his friends to take on a powerful villain, or the MHA heroes joining Spider - Man to fight a threat in New York. Also, the 'mentor - mentee' trope can work well. Spider - Man could mentor a young hero in MHA, teaching them about responsibility and using their powers effectively.