The founders might be quite surprised by the Golden Trio. They could be impressed with their skills and knowledge. For instance, Hermione's vast magical knowledge would surely catch their attention.
In fanfiction, when the Golden Trio meets the founders, there could be a lot of magic exchange. Maybe they'll learn ancient spells from the founders. The founders might be impressed by the Trio's courage and friendship.
The Golden Trio's reactions would be diverse. Hermione would immediately start making mental notes about the new magic education system. She would be interested in how they teach Charms, Potions, and Transfiguration in the future. She might even try to get involved in some of the classes as an observer. Harry would be looking for the sense of community and camaraderie that he had at Hogwarts. If he doesn't find it in the future's system, he would be disappointed. Ron would be a bit overwhelmed by all the new gadgets and advanced magic used in the teaching process. He might long for the simpler days at Hogwarts, but at the same time, he would be curious about the new things he sees.
He might be initially shocked but then feel a sense of honor. After all, being chosen by the founders for a mission is a huge deal.
They might be really surprised. Harry could find it strange to see different versions of his own story. Hermione would probably be critical at first, analyzing the plot holes or inaccuracies compared to the real events. Ron, on the other hand, might find some of the more comical fanfictions quite hilarious.
They'd probably start off being really cautious around each other. The Golden Trio would be cautious because the Winchesters seem so different and rough. The Winchesters would be cautious as they're not used to this kind of magic. But then Hermione might start asking questions about the Winchesters' hunting methods and Dean would start joking about the Trio's school - like magic.
There are often fanfictions that explore different relationships within the golden trio. Maybe a story where Hermione and Ron have a bit of a falling out, and Harry has to play mediator. It delves into their complex friendship dynamics and how they grow from such experiences.
In fanfiction, if the Marauders meet the Golden Trio, there could be a lot of chaos at first. The Marauders were known for their pranks and mischief, while the Golden Trio is more focused on fighting against Voldemort. But they might also find common ground. For example, James Potter could bond with Harry over their shared experiences as Gryffindors and leaders in their own ways. Sirius might take a liking to Hermione for her intelligence and bravery, seeing a bit of himself in her willingness to break the rules for what's right. Remus could share his knowledge of the wizarding world with Ron, who is always eager to learn more about magic outside of what he already knows. Overall, it would be an interesting mix of different personalities and generations.
Another possibility is that Harry has a personal journey he needs to undertake alone. Maybe he discovers some new aspect of his magic or his family history that he can't fully explore with Hermione and Ron. He might need to go to a place or study with someone who the others don't trust or are not allowed to go with, so he has to leave the group to follow this new path.
First, look for how well the characters of the golden trio are portrayed. They should stay true to their original personalities. For example, Hermione's intelligence and determination should be intact. Second, the 'lemon' part should be integrated in a way that doesn't seem forced. It should enhance the story rather than just be there for shock value. And third, a good plot that takes advantage of the trio's relationship and the magical world they inhabit.
One possible antagonist could be a dark wizard who wants the baby for its own dark purposes. Maybe the baby has a unique power that the dark wizard wants to harness. Also, there could be some jealous wizards or witches in the community who are envious of the Golden Trio's fame and don't want to see them succeed in this new family venture. They might spread rumors or try to create problems for the Trio and the baby.