Well, first of all, it's not in line with the moral and ethical standards of the Pokemon world. The Pokemon series has always promoted positive values like friendship and perseverance. Mating - related fanfics are completely off - track and can also have a negative impact on the brand image of Pokemon.
There should not be any. Pikachu is a beloved character in the Pokemon world, and such fanfics would distort the intended positive and innocent image of the Pokemon series.
One problem could be that it may go against the intended character development of Cinderpelt in the original story. She was mainly known for her role as a medicine cat, and a mating fanfic might distort this important aspect of her identity.
One problem is the lack of originality. Since they are overused, the plots tend to be very similar. For example, the story of a trainer starting with a Pikachu and going on a journey to become a champion is so common that it becomes boring. Another issue is that it may limit the creativity of new fanfic writers. They might feel pressured to follow the same overused patterns instead of exploring new ideas.
Well, a fanfic about Pikachu and Porygon can be charming because of their contrasting natures. Pikachu is this cute, furry, and very physical Pokemon. Porygon, in contrast, is a digital entity. In a fanfic, their differences can lead to many comical situations. For instance, Pikachu might get confused when Porygon does something like disappearing into a digital portal suddenly.
One interesting concept could be the exploration of different Pokemon species' compatibility in a fictional mating scenario. For example, how the traits of a Pikachu and a Eevee might combine in their offspring if such a thing were possible in the fanfic world.
It might also face criticism from the Pokemon fan community at large. The core of the Pokemon world is about friendship, battles, and exploration. Introducing'shemale' concepts can seem out of place and not in line with what the majority of fans expect from Pokemon - related content. Moreover, it could potentially lead to a negative perception of the fanfic genre within the Pokemon fandom.
It can add a new layer of creativity. Fans can come up with unique Pokemon hybrids and backstories for them.
One possible plot could be a race between Porygon and Pikachu. Since Porygon can move quickly in digital spaces and Pikachu is super fast, they could compete in a unique race. Maybe the prize is a rare Pokemon item.
The fanfic could be about Pikachu getting angry when a new powerful Pokemon arrives in the area and starts bullying the other Pokemon. Pikachu, being the brave little Pokemon it is, stands up to the bully. At first, it loses battles due to its anger getting the best of it. But with the support of its friends, it manages to channel its anger into strength and defeats the bully.
In fanfics, Pikachu's Force Lightning can be depicted in various ways. Some might show it as an extremely powerful attack that can even take down much larger and stronger Pokemon. It could be a result of Pikachu reaching a new level of power or being in a special state of rage or determination.