So we do actually have indications that it goes beyond Eternity then, huh?
That instance is certainly one, yes. Although I'm not exactly sure how interested you'd be in discussing this, since it deals a lot with canon-centered discussions (See my remark that this depiction of the Negative Zone largely never really made it past this comic, and in general is really wild compared to how it is everywhere else)
Now that you commented on that, I guess I can put out the rest of my response:
That's a fair argument as that (assuming no other "all" weirdity applies) it's fair to assume the dimensionality refers to at least that in Eternity. If there were relevant dimensionality statements exclusive to other realities, it might need closer inspection.
This of course also only holds if we decide that things like the crossroads only connect one reality.
Not sure if it actually matters for scaling under this conditions, but I suppose we may as well move on from this point then.
I wouldn't say this point is that secondary. If a being that explicitly covers all dimensionalities is contained in one Earth, and there's nowhere else in the multiverse where dimensionality exists except inside the Earths (Which are all equal in that regard), then that would have us, as a rule of thumb, assume that dimensioned realms are contained somewhere in one Eternity, if there isn't anything indicating that they are not. If a realm above Eternity was introduced and was explicitly higher-dimensional or something, then obviously we'd review that assumption, but this not having happened, what I say stands.
Anyway. Some extra stuff to add to the above, here for additional information's sake. I'm gonna put it in little collapsibles so it doesn't clutter up the post.
Have to disagree on that notion for the already mentioned reasons. Don't believe non-digital implies that the space corresponding to the dimensionality of a intellectual matrix existence is meant as physical dimensions.
And as I said, my point doesn't really require those dimensions to be physical, since Slorioth himself isn't a physical entity either (Or at least doesn't seem to be). Them being non-digital is all that really matters. Though, the fact that Slorioth's dimensionality has direct interaction and comparison with physical dimensions (His physical body being the most infinitesimal sliver of his incorporeal one. Him being unable to fit in any dimensionality, including that of the Earth Dimension, except through said slivers, due to being too big) is probably of interest to note, since abstract dimensions obviously wouldn't have such interactions with physical ones, so, either Slorioth's dimensionality is still physical in nature after all, or abstract dimensions in Marvel are comparable to physical ones.
Not the best evidence then IMO.
I already stated my reasons for the opposite (i.e The fact the Celestials were being truly slaughtered there, narratively, and not just their avatars), but I suppose this falls under the same umbrella as the Hyperstorm point.
With this point seemingly on its tail-end, and the first one largely moved past, I suppose we can start moving on to the other three, then?