Well, in an infinite potential system novel, the concept of a system that has no boundaries in terms of growth and development is central. This means that the power scaling can be astronomical. Characters may start from very humble beginnings and then quickly rise to god - like levels of power. There's also a high degree of unpredictability. Because the potential is infinite, the story can take sudden twists and turns that are difficult to anticipate. And often, the system itself serves as a sort of guiding force or framework that both enables and constrains the characters' actions.
The potential problems are numerous. Firstly, it may violate the ethical boundaries as it might objectify the characters from the game in a sexual way. Secondly, it could lead to a negative perception of the fanfiction community as a whole if it becomes too prevalent. Also, from a legal perspective, it might infringe on the rights of the game's creators if it goes too far in terms of inappropriate use of their intellectual property.