Glad we agree then to some extent

I think I am more sensitive to "smaller" jumps than you, though.
To me "pretty reasonable" isn't good enough.
I think it's very hard to create a structure without any reasonable additions i.e. things that seem instinctively true.
Uh, no, not all of the stuff that's generally attributed to Se is completely deduced by those. If you disagree, do please explicitly explain everything attributed to Se by these dichotomies.
E.g.: "Information about spatial territory, ownership, and influence", "one is powerful or not", etc...
Let me demonstrate:
We know what Sensation is i.e. It is all information that is External and Involved i.e. the visceral things pressing on us from the outside world like sounds, sights, forces, shape, space, resources etc.
We know that Sensation is Irrational, it just is, we don't decide our Sensations. They are perceived, not judged.
Now we know that Se is Extroverted, it expands outwards, taking on more and more sensory data i.e. increasing our physical territory or space, wanting something in the physical world and taking it etc.
We know that it is Static, it wants something and then snaps to something else. It energetically darts after something, then the next.
Essentially the aggression with see in Se is it being Extroverted about Sensation. It is promiscuous and predatory with real, concrete things. Ne is equally promiscuous and predatory with abstract, conceptual things.
Oh?
Yeah, causal structures.
By deliberate structure from the beginning, you mean building up the whole theory on an initial idea of structure right? That's pretty deductive too, I guess my thinking is different, I'm a looot more inductive.
Well, a reasonable addition is an induction.
I don't actually see a problem with Extroverted + Irrational + Dynamic... just don't call it EP then
Well when I think about making EP dynamic, I get a peculiar situation where going after multiple things but what I want is constantly changing. It would be like running around with a compass but the needle randomly spinning around causing me to run around in a circle. It seems we must be EP in a Static way to ever get what we want.
IP can be Dynamic because it has a few things to continuously waver on.
Can one be Extroverted and Rational but also Static? I think such a person would soon be bound up by too many oughts and regulations to do anything more if each ought remains fixed after it has been taken on. The Dynamic nature is required for the person to slide from oughts in one situation to different oughts in another.
IJ can be static because it only has a few things to stick to.
What do you mean by more sufficient but not necessary?
I think the theory can work without that specific dichotomy but we could remove another dichotomy and the Static/Dynamic would fill its place in the deductive steps.
But how's that working in reality? To me this is a pretty big jump.
I mean the idea of different thinking processes is fine and great but I'm not quite sure that they are divided by information aspects in such a sense. After all what your brain gets as raw input has nothing to do with our high level concept of these "information aspects". It's quite easily possible that the organization and processing of the data is done differently. I once read that these socionics information aspects are believed by some to be actually out there in the world in a sense. Well I would disagree on that.
I agree with you that IM elements are theoretical concepts rather than real things. They are categories of information metabolism which is a bio-psychological process. If there were to actually exist as real, concrete things then they might be parts of the brain or neural networks which we have yet to directly map.
I would not say it is a big jump to say that there are IM elements in the theory if we take into account the law of psychological asymmetry and address the need to categorise our interactions with information rather than categorise just the information itself.
No, say, we add types 10 11 and 12 and then the integration/disintegration lines are like this, ...10->11->12->10...
(Just like with the 3-6-9 group being separate from the other 6 types.)
That doesn't fuck up the already existing ones
That sounds like a clumsy annex on the Enneagram... it would no longer be called the Enneagram though
It would have to be its own core, say the 'Nose core' to not interfere with the Head, Heart, Gut etc. It would be odd to have the lines of integration being entirely integral to its core though when the other lines of integration are inter-core. You would also have to replace 1w9 and 9w1 with 9w10 and 1w12 which would need to be explained.