I'm not sure as I haven't read it specifically. But generally, a 'regressor' in novel terms might imply a character who goes back in time or reverts to a previous state. So perhaps this novel is about a character who is not such a regressor and has a different kind of story, like a forward - moving adventure or a story based on present - day challenges.
Fem Luffy would probably be more worldly. Shanks has a wide range of experiences and connections. Growing up with him, Fem Luffy would have met different people from different backgrounds. As a result, she would be more diplomatic and better at handling various situations. For example, when dealing with other pirate crews or even the Navy, she would know how to communicate effectively. Also, she might have a more refined taste in food and other aspects of life compared to the regular Luffy, as Shanks' crew might have introduced her to different cultures and cuisines.
Usopp might be inspired to be braver. When he watches Luffy's memories, he could see how Luffy fearlessly faces powerful enemies. This would make Usopp want to overcome his own cowardice and be more like Luffy. And Robin, she would gain more insights into Luffy's kind heart. She might see how Luffy has always been inclusive and accepting of everyone, which would make her feel even more at home in the crew.
Sadly, I'm not aware of the author of 'im the max level newbie novel'. There are so many novels out there that it's difficult to know every author. You could also try reaching out to local libraries or bookstores to see if they have any information on it.
I'm not sure specifically as I haven't read it. But generally, a 'newbie' in a novel often refers to a new or inexperienced character. And'max level' might imply that this newbie has reached an extremely high or top - level state in some aspect, perhaps in power, skills or knowledge within the context of the story.
There would likely be a different power dynamic. While Luffy is the captain, the all - female crew might have their own unspoken hierarchies based on their skills and relationships. For instance, the most experienced sailor among them might have a lot of influence when it comes to ship - related decisions, and this could sometimes clash or blend with Luffy's decisions.
Since I haven't read it, I'm not sure. But likely there is the sister who is the queen. There may also be her family members, like siblings or parents, who could play important roles. And there might be courtiers, advisers, or love interests.