I find the reading interesting, but it's raising questions in my mind: Namely, why are all the type descriptions (not just yours) focused on what seems to be "immature" members of the type?
I suppose it is for ease of exploring the raw basic personality before any functions become developed -- we are clarifying how all the functions generally originate and interact with each other -- but in terms of identification, the systematic description is only useful to recognize raw/immature people of the type in question.
Namely, when you began talking about Te, well, my mind leaps to INFPs I know who actually have a mature Te developed. They are still clearly INFP, running off Fi+Ne as their main function combination; but their Te is mature enough that sometimes they have even confused themselves about how best they should spend their efforts.
(Recently one told me he had not really understood why he was getting frustrated being an organizational leader, because he did that sort of thing so well... but his real heart was in the personal interaction with others and helping to actualize them and affirm/encourage them. Very personal ministry, rather than "behind the scenes / get things done" activity.
He felt vindicated and "released" when I described to him the sort of person he seemed to be to me, function-wise, and how it made a great deal of sense for him to want to be more personal, because that is what I saw as his strength, and the organizational skills were definitely something he had, but they were not really his main desire in how he wanted to relate to others.)
In any case, why are INTPs always assumed to have a lousy Fe? Yes, they start that way; but if you're trying to recognize an *adult* INTP with some relational experience, the Fe will have to become a notable part of the description, not constantly described as a weakness and to coach people in what "flaws" to look for... because perhaps the INTP is now more well-rounded. And the same goes for the rest of the types..
Maybe we need "stages" for types, very much like butterflies, with a larval stage and some intermediate, then a final actualized stage flitting about.