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.
It makes the plot highly dynamic. Since the potential is infinite, new elements can be introduced at any time. For example, a new power - up or a previously unknown part of the system can suddenly appear and change the direction of the story. This keeps the readers on their toes as they can't predict where the story will go next.
Well, from the Infinite Stratos series, Charlotte Dunois would be a great addition to the harem. Her kind and somewhat shy nature would contrast with Naruto's boldness. Laura Bodewig is also a possibility. Her strict military - like attitude would be an interesting dynamic with Naruto's more free - spirited ninja ways. And let's not forget Ichika's sister, Madoka Orimura. She could be in the harem, being drawn to Naruto's unique abilities and his caring personality.