One possible plot could be that the Black Cat licks Peter Parker as a form of affection, and this becomes a unique way for her to show her feelings in a world where their relationship is full of secrecy and danger. Maybe it's a sign of trust she's building with him.
The licking could initially be a source of confusion for Peter. He might not understand what it means exactly, which could cause some tension in their relationship as he tries to figure it out. But once he realizes it's a sign of her care, it could enhance their bond.
One idea could be that Peter Parker has to balance his superhero duties with taking care of a pregnant Black Cat. He might start to build a more stable home environment for her, like getting a new apartment. Another could be that the pregnancy reveals new threats, as villains might try to target her. Maybe they think they can use the unborn child as leverage against Spider - Man.
One interesting plot could be Peter Parker using his newfound knowledge from his rebirth to prevent some major disasters that originally happened in the Spider - Man storylines. For example, he might be able to stop the death of a certain important character much earlier.
One interesting plot could be Peter Parker adjusting to his blindness while still trying to protect his neighborhood. He might rely more on his other senses like enhanced hearing to detect danger. For example, he could learn to 'hear' the footsteps of approaching villains from a distance. Another plot could involve his friends and family helping him adapt, and in the process, they discover new abilities within him that were previously overlooked due to his focus on his spider - abilities.
One interesting plot could be Peter using his gamer skills to upgrade his Spidey - sense. For example, he might be able to analyze threats more precisely like in a game where he levels up his detection ability.
His life would change in many ways. First, he would need to be more present at home. No more staying out all night as Spider - Man. He would have to ensure Black Cat has proper medical care, which might mean finding a doctor who can be discreet about their identities. Also, he'd need to start thinking about finances. Babies are expensive, and he can't rely on his meager reporter salary alone. He might have to take on more side jobs or find ways to earn more money legally. Emotionally, he'd be a bundle of nerves, constantly worried about the safety of Black Cat and the unborn child.
One interesting Black Peter Parker fanfiction could be about him using his skills in a unique urban setting. Maybe he teams up with other characters in a way not seen in the original comics, like forming an alliance with local street heroes to take on a new threat that targets the black community specifically.
One interesting plot could be Peter Parker getting lost in a strange dimension and Stephen Strange has to use his magic to find and rescue him. This would involve a lot of cool magical battles and Peter using his spider - skills in an otherworldly setting.
One interesting plot could be that Peter Parker discovers a new form of dance that actually helps him improve his Spider - Man reflexes. He starts secretly training in this dance style in an abandoned warehouse. As he gets better at it, he also uses it to outwit his enemies in a really unique way during battles.
One interesting plot could be that while sleepwalking, Peter Parker accidentally uses his Spider - Man abilities. He might swing between buildings unconsciously, causing chaos in the city. People are both amazed and worried as they see Spider - Man acting so strangely.