Well, in the comic universe, Vision and Wanda have a child. But the storylines can get quite complex and there are different variations depending on specific comic arcs.
Well, perhaps in the fanfiction, it starts with a strange magical event that leads to Wanda's pregnancy. Vision, being the loving partner he is, immediately starts researching everything about having a baby in their unique situation. They could have a lot of sweet moments, like Vision trying to feel the baby's kicks with his sensors, and Wanda using her powers to create beautiful things for the baby's nursery.
The other superheroes would have mixed reactions. Some, like Iron Man, might be a bit worried at first about the potential chaos a super - powered baby could bring. But after seeing how happy Vision and Wanda are, he'd come around and offer his technological expertise to create safe and fun gadgets for the baby. Hawkeye, on the other hand, would be the laid - back uncle figure, always ready to babysit and tell funny stories.
One interesting aspect of Wanda and Vision in fanfiction could be exploring their relationship in alternate universes. In some fanfics, they might face different challenges that test their love and loyalty more severely than in the main MCU storyline.
In a fanfiction take on Wanda and Vision's relationship in Infinity War, there are numerous ways it could have been different. For starters, if they had made different strategic choices. Maybe instead of staying in Wakanda, they could have sought refuge in a more hidden and magically protected place. This would have given them more time to just be a couple. Additionally, if Vision had been more in tune with Wanda's emotional state, he could have comforted her better during the difficult times. And Wanda, in turn, could have used her powers more creatively to protect Vision, rather than just in a reactive way. This would have not only deepened their relationship but also potentially changed the outcome of the events in Infinity War.