Another plot could involve them preparing for the arrival of the baby. They could be seen shopping for baby supplies in different alien markets. Quill would be clueless about most things, while Gamora has a more practical approach, leading to some comical situations.
Their relationship would likely deepen. The impending arrival of a baby would bring them closer together on an emotional level. They'd have to communicate more about their hopes and fears for their family. For instance, they might have long talks about what kind of values they want to instill in their child.
Adventure is also a big theme. Since they are both from the Guardians of the Galaxy universe, they often go on exciting quests together in fanfiction. This could involve fighting against powerful villains or searching for rare and valuable items across the cosmos.
The setting also matters. A 'hot' Gamora fan fiction might be set in some far - flung and dangerous corner of the galaxy. Maybe she's exploring an ancient, forbidden planet and discovers secrets about her past or the power of the Infinity Stones. The sense of adventure and discovery in these settings can make the story really exciting and 'hot' in the sense of being full of action and intrigue.
One common theme is love and sacrifice. Since their relationship is complex, many fanfictions explore how much they are willing to sacrifice for each other.
The fanfiction may also incorporate elements from the Marvel universe they belong to. For example, their adventures together, how they deal with other characters while in a relationship, and how their love might grow or face challenges within the context of the existing storylines.
One of the main themes is definitely the idea of second chances. Given their story in the movies, fanfiction often plays with the concept of them getting another shot at their relationship. The theme of sacrifice also pops up a lot, as both characters are known to be selfless at times. And of course, the theme of discovery, as they discover more about each other and themselves through their interactions.