The setting and the world - building within the Harry Potter universe can be a challenge. You have to make sure that the story fits in with the existing lore. If Draco and Hermione are having a baby, how does that affect the wizarding world? What about their families' reactions? And how do you handle the magical aspects of pregnancy and raising a child in this world? There are a lot of details to consider.
One challenge would be character development. Draco and Hermione have very different backgrounds and personalities in the original series. So, making their relationship believable and showing how they would come together to have a baby is difficult. For example, Draco was a Slytherin with a family history of supporting the Dark Arts, while Hermione was a Gryffindor who fought against it.
In such a fanfiction, the story could start with some sort of strange encounter between Hermione and Draco that leads to a relationship. Their baby could be a symbol of a new unity between the Gryffindors and Slytherins. The fanfiction might focus on the challenges they face in raising the child in a world that is still divided by the old rivalries. For example, they might have to deal with people who don't approve of their relationship and the fact that they have a child together.
The wizarding community would likely be in shock. The old rivalries between Gryffindor and Slytherin are deeply ingrained. Many would probably be critical at first, especially those who are more traditional. However, some might see it as a sign of a new beginning and a way to bridge the gap between the two houses.
Yes, there are likely some out there. The Harry Potter fandom is vast, and there are fanfictions on all sorts of strange and interesting pairings. However, I can't name a specific one off the top of my head. You would probably have to search on popular fanfiction websites like Archive of Our Own or Fanfiction.net.
One idea could be that their baby girl has a unique magical ability that combines Draco's pure - blood magic heritage with Hermione's brilliant intellect. For example, she might be able to instantly understand and translate ancient spells. Another idea is that she grows up in a world where the old rivalries between Slytherin and Gryffindor are starting to fade, and she becomes a symbol of unity between the two houses. She could be friends with children from all different houses and use her influence to promote harmony at Hogwarts.
In the wizarding world, the reactions from friends and extended family would be mixed. Some pure - blood families might look down on the union and the baby at first. However, those who know Draco and Hermione well, like their Hogwarts friends, would be happy for them. Harry and Ron might be a bit skeptical at first but would soon grow to love the baby and protect it as if it were their own family.
Well, it would be very strange. Given their different allegiances in the original story, it would require a lot of backstory to make it seem plausible. Maybe it could involve some sort of mind - control or a very different take on the wizarding world's social structure.
One possible plot could be that they are forced to work together on a post - war project in the wizarding world. At first, they still have their old grudges but as they spend more time together, they start to see each other in a new light. Eventually, they fall in love and have a baby. Their baby could then be a symbol of a new era of unity between the former rival houses in Hogwarts.
Hermione would face a great deal of prejudice from the pure - blood society. Since she is Muggle - born, many in the wizarding world, especially those in the Malfoy's social circle, would look down on her. She would also have to deal with Draco's own internalized prejudices. He has been taught to think of Muggle - borns as inferior, and Hermione would have to work hard to change his view. Another challenge would be maintaining her own identity. The Malfoy family has certain expectations and a way of life, and Hermione would have to find a way to be true to herself while also fitting into this new family dynamic.
The difference in their family backgrounds would also be an issue. Hermione's Muggle - born status and Draco's pure - blood family with their traditional values. Draco's family might try to interfere and break them up, not wanting to be associated with a Muggle - born. This could create a lot of tension between the couple.
Well, in such a fanfic, it might show how Draco and Hermione's relationship evolves over time. It could start with them being at odds due to their different houses and family backgrounds. But as the story progresses, they might find common ground. For example, they could both be interested in a particular area of magic that forces them to work together, and through that, their feelings start to change.