So, Featherine would have to operate at a level that transcends the notion of a 1-A hierarchy in the same vein, that 1-A does to everything below it. So if she sees the the entirety of the endless ladder as nothing more than fiction, cannot be communicated at that level, and she's on a level of existence separate from a lower hierarchy then, yeah, High 1-A is fine.
Yeah that's pretty much Featherine’s existence beyond the Witch Domain. Like someone else mentioned, both the human world and the meta-world are seen as equally insignificant, akin to two different backgrounds in a theatre play. (which the series even uses as an analogy to explain the difference.) but what’s more important here is the idea of Featherine being a self-insert character, where she exists on a level far beyond the Witch Domain, where the infinite ladder is used as an analogy to represent the levels of which the witches can evolve and reach. The gap between Featherine's Avatar and the rest of the witch domain is like a witch endlessly climbing the ladder within the witch domain. No matter how high they go, Featherine will always be at the top, unreachable. She would be at the end, and frankly speaking beyond this infinite ascension.
Before going any deeper, let me clarify how the Witch Domain is structured. There are two kinds of fragments.
1. Fragments that represent possibilities (or parallel worlds), which are found inside individual Catboxes.
2. Fragments that represent territories, which are part of the layers (Infinite Ladder) in the Witch Hierarchy.
For example, from the perspective of Voyagers like Bernkastel, Beatrice’s entire Catbox is viewed as just a regular singular fragment. Voyagers can travel through the True Sea of Fragments (SoF), in search for different stories and something to ease their boredom. In this sense, Beatrice’s Catbox is just another “story” or “tale” that Voyagers can interact with. But within her Catbox, a separate Sea of Fragments is created, forming its own set of universes and worlds.
The True Sea of Fragments refers to the fragments inside the City of Books, which is made up of all these territorial Catboxes (Example would be Beatrice's and Bernkastel's). From the SoF perspective, everything, no matter how large or complex, is ultimately equally insignificant. It is all reduced to the level of a single fragment and in turn, less than a single line inside one of these books (iirc the entirety of the witch domain was stated to be less than a line in one of those books), which fits with what I mentioned earlier.
Now, from what I said above, we can see that Lambdadelta, another Voyager, would exist on a level far beyond the normal witch territories. Her existence would be completely detached from those lower realities. She is one of the Witches of Senate and can access this very same City Of Books I mentioned above, not to mention, both her and Bernkastel can damage and destroy parts of CoB (which encompasses what I stated above). Keeping this in mind, Lambdadelta got oneshot by the very same avatar I was referring to earlier, existing in a total different reality from the level of which Lambdadelta exists on. Featherine's Witch Avatar was already beyond, and ultimately outside, the entire hierarchy of R>F transcendences between each Territory Lord in the witch domain, all the way up to the City of Books (CoB). And THEN, there’s Featherine’s "True Form" beyond this, which is the one that inserted this avatar into the story to play a specific role.
If this doesn’t warrant a H-1A rating, I’m not sure what would, even outside of the 07th Expansion. I guess we'll have to wait and see.
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