One interesting storyline could be Tim Drake trying to balance his superhero duties with taking care of a baby. Maybe he has to bring the baby along on some not - too - dangerous missions and figure out how to keep the baby safe while still being a hero.
Another storyline might involve the baby having some sort of special power. This could lead to Tim Drake having to protect the baby from those who would want to use the baby's power for evil. He'd have to figure out how to raise the baby and help it control its power at the same time.
In some cases, characters from Tim Drake's personal life, such as his family members (if they exist in the fanfiction universe) could be present. They might have different reactions to Tim having a baby, some being supportive and others being skeptical or worried.
In baby Tim Drake fanfiction, family is a big theme. Whether it's his original family or the Bat - family, his relationships are explored. The theme of discovery is also there. It's about how he discovers his talents and his place in the world of Gotham. And of course, the theme of heroism starts early. You can see the seeds of his future heroics being sown in these stories.
One good baby Tim Drake fanfic could be 'Tim's Tiny Adventures'. It might show his early days in a really cute way, like his first encounters with the Bat - family as a young child. Another could be 'Baby Tim and the Robin Legacy' which could explore how he was influenced by the Robin mantle even at a young age.
One possible storyline could be a heist adventure. Catwoman is known for her thieving skills, and Tim Drake as Robin has the detective skills to try and stop her. But instead of a simple good - vs - bad scenario, they could end up having to team up against a bigger threat, like a new super - villain in Gotham who is after a powerful artifact that Catwoman was also planning to steal. This would force them to put aside their differences and work together, leading to an interesting dynamic of trust - building and mutual respect.
One way is through character development. If Tim Drake's character growth in the official content is so well - done that it encompasses all the aspects that fans would usually explore in fanfiction, like his relationships, his struggles, and his achievements. This can lead fans to be more satisfied with the official story and less interested in creating or reading fanfiction. Also, if the official creators are using Tim Drake to tell stories that were previously only told in fanfiction, it can replace the need for it. For instance, if there were certain alternate universes or character crossovers that fans were writing about in fanfiction, and now the official source is doing it with Tim Drake, it can reduce the appeal of fanfiction.
I think 'A Young Tim Drake' is a good one. In this fanfiction, you can see how Tim's intelligence was already showing even when he was just a baby. It also gives some insights into his family life before he got involved with Batman. 'Baby Tim's Adventure' is also worth reading. It has a really cute take on how baby Tim might have explored his surroundings while being curious about the world around him.
One interesting storyline could be Tim Drake's struggle with the moral code of the League of Assassins. He's a hero at heart, so being in an organization that kills might force him to reevaluate his beliefs. Another could be his relationships within the League. Does he make friends or enemies? And finally, there could be a storyline where he tries to reform the League from within, using his wits and skills.
One interesting aspect could be the exploration of the other characters' reactions. For example, how Batman and the rest of the Bat - family deal with Tim Drake's death. It can show their grief, anger, or determination in a way that might not be fully explored in the main comics. Another aspect is the potential for alternate storylines to unfold. Maybe new villains emerge in the power vacuum left by Tim Drake, or different heroes step up in unexpected ways.
One great storyline could be them teaming up to solve a mystery in Gotham that the Bat - family has overlooked. Maybe a series of strange disappearances that seem to have no connection at first, but as they dig deeper, they discover it's all part of a grand scheme by a new villain. They would use their unique skills, Bat Girl's martial arts and detective skills, and Tim Drake's brilliant mind and acrobatic abilities to piece together the clues.
One possible storyline could be how Harry Potter's friends react to the news of him having a baby. They might be overjoyed and start planning all kinds of things for the baby's future.