Here's my explanation of the dynamics and why they're so important. If you want to skip all my rambling, the third last paragraph is the new dynamic and the rest is just me explaining my thought process and why all this is important.

To me, the core of this story has always been the dynamic between Naruto and Kurama. The whole concept was literally "How do I make Kurama more present than he was in canon, without destroying both of their characters?", so I made the focus of my writing to always do my best to nail their dynamic. Everything else comes and goes; I focused on Naruto's summons for a chapter or two, Jiraiya makes sporadic appearances, Hinata and Sasuke come in and out of relevance, but I always make an effort to have Naruto, Kurama, and their banter be in every chapter. So, as long as I understood that dynamic and could use it as a crutch to support whatever idea and/or character inspires me in the moment, I could churn out short chapters daily (given that I actually have something inspiring me at the time. Christmas was kind of a dry patch for inspiration, surprisingly).

And there's the problem. I added Minato. Which really shouldn't have been a problem; I've added characters before, and they've never thrown off my core dynamic. But Minato is different because of how I implemented him. Being in Naruto's head throws him directly into the core dynamic; I can't just have conversations between Naruto and Kurama without sidelining Minato, and doing that would not only spit in the face of one of my favorite characters, it would also be completely out of character for all three of them. Minato has to be present and at least somewhat active in Naruto's life, and therefore the core dynamic between Naruto and Kurama. Which means I have to change the core dynamic. I literally had to rewrite the only constant keeping the whole flow of the story going.

So that was the whole crux of the problem. Inspiration dry patch, plus rethinking the core of my story, plus some personal issues that cropped up at the worst time ever. The personal issues are not going away. Actually, things are kind of turbulent right now and I don't think they'll stabilize for at least another month. But inspiration is coming back; it's not where it was last fall (when I was churning out an ungodly four chapters a day sometimes), but it's not quite as gone as it was during Christmas and the New Year. And I think I have a solid idea of what the new dynamic is going to be.

My approach to writing the new dynamic was actually almost exactly like how I figured out the first one: define the characters as individuals, then see what they bring to the table as a group. So, Kurama is the main source of knowledge and/or wisdom. He knows all the theory about chakra, how it works, and how to apply it for Naruto. He also brings sarcasm and completely undisguised disdain for humanity in general. He has a uniquely objective perspective, as an outsider to humanity, but also has a grudge against certain people. He also shapes Naruto's personality somewhat, as Naruto is a very impressionable child. But Kurama isn't some perfect wellspring of infinite knowledge; he has blind spots, and very big ones. He wouldn't know things like how to function in a human society, or how humans use chakra, because he's never bothered. Such things have no use for him. This is the blind spot that he and Naruto have to work through and improve.

For Naruto, I see him as the more active one. Where Kurama is the one giving sarcastic commentary, Naruto is the one actually living the life Kurama commentates on. He is the one learning, actively interacting with the world, and working to improve himself. He makes friends, learns new things, makes a name for himself (and Kurama, by proxy, but mostly through the cult). Of course Naruto is young and impressionable, and tends to judge things a bit wrongly (or disturbingly right, as with Jiraiya and his probably masochistic tendencies), but he has a genius of his own. Kurama can't always put the pieces together. He doesn't understand much of human society, or how humans use chakra. I actually made a point of spelling out how their dynamic works in the chapter where they start trying to figure out seals: Kurama has all the pieces, but Naruto puts them together. Kurama has the theory, but Naruto is the one who applies it in new and creative ways.

So when I add Minato, I simply extend the dynamic. Minato is definitely a genius in his own right, but he is undeniably human. Kurama had to guess and experiment to get a four-year-old Naruto to discover how to use his chakra, but Minato would have already known how to teach a child to find their chakra. Kurama views hand signs as a waste, because he doesn't understand just how different using chakra is for a human. But Minato understands exactly why hand signs are useful, and can give insight that Kurama cannot. Minato is smart, practical, ruthless when he needs to be, clever, but also incredibly loving. Kurama will be petty, but Minato will be patient. Of course, Minato will be petty occasionally, but I think his brand of revenge will be less "be a pain when I feel petty" and more "you have wronged me, I'm gonna hit you where it hurts". Like passive-aggressively getting Kurama to do potty duty for a solid two weeks, or encouraging Naruto to plant poison ivy on the walls of the Hokage Tower to force ninja to take the stairs as a blow to their pride. Naruto and Kurama are a little aimless; they kind of just do whatever they feel like and train whatever skill is on their minds this week. Minato brings focus and realism. He's not quite the straight man, but he does ground them when needed and amplify their creativity when needed.

So, here's the dynamic:

Kurama brings knowledge and sarcastic commentary. Minato fills the gaps in Kurama's knowledge and logic while keeping all of them focused and grounded (or amplifying the crazy/petty energy when it's beneficial). And Naruto is the bridge, taking the pieces that Minato and Kurama give him, putting them together, adding his own spin on it, then actively using it in the world.

If you read all this, thanks! Feedback is very much appreciated, but I'm just happy you cared enough to give me some of your time.

(And I'm very sorry to everyone who's eager to see Kushina in the story, but that's definitely not happening yet. I love Kushina to death, but if adding Minato was this much of a headache, Kushina's gonna have to wait until I actually know what to do with her instead of just getting thrown in at some point and hoping I figure it out. She's gonna be here eventually, but please be patient with me while I figure out how to do that without causing another way-too-long hiatus)