BijuuKage No, I don't think that the model you proposed has any way to be implemented. Put yourself in the author's shoes. You are spending 8 hours a day to write 8 chapters a day, all for a premium novel. But all your dedicated readers can freely read 7 of them daily, making only a single chapter out of 8 that can actually bring you any profit. Make a second account and level it up, and you are free to read any amounts you would ever want. I already have some readers complaining when I post 4 chapters that they can't keep up with fast passess alone, but think about how does it feel to me?
I work my butt off to write and I'm okay with people reading it for free as far as WN offers them to do so, because thats the deal I agreed for. But if people were to be able to read everything I write for free till the end of times... What would be the point of writing?
I'm one of the more motivated authors out in the field, but I can tell you already - do something like that, and this site would return to translated stories only in a matter of 2 weeks, because no author will waste their entire free time or even dare to consider it as fulltime job, if they won't be able to earn a penny from it. Sure, they might be some who will rely on patreon or kofi, but thats the solution only for a selected few.
It's nice to have things for free, but guess what - paying for stuff you enjoy is what makes it improve. Because there is incentive for writers to actually strive to be better, write more, think about the story more. Unless you want to kill the original part of the WN, the system you proposed should never be implemented.