Ok. It still tips me off towards you being *not* Se base.
Oh the external harmony means the world is good as it is with its possibilities, supposedly affecting tangible change destroying this external harmony is more the domain of Se. Where Se is compatible with the internal harmony of Ni with its intuitive principles instead of the external world's. Let me know if that made sense.
Ti vs Te: what is the problem there for you? I would say it's like, Ti needs to understand how things with all their quantifiable traits objectively, quantifiably and distinctly relate to each other in a systematic and logically predictable way before it can deal with objects or take action, while Te just gets the objective, quantifiable distinct facts themselves to take action to ensure things are working right in the world. So Ti operates with objects through a logical layer removed from them while Te is more direct in accessing them.
Ofc Te egos have a little Ti in the background helping unconsciously sort some of the facts a bit beyond what's already been presented to Te, but Te does not ever focus on that consciously, instead, if they get to subscribe to a few systematic principles, they are simply part of these functionally sensible/actually working facts for them. While Ti also has a little Te in the background helping a bit with absorbing facts unconsciously. Ti also cares whether their logic actually works and is sensible but it has to be sensible and has to be working in terms of the logic ordering things in the system they themselves organize beyond the pure facts, or beyond stuff that's directly stated that you can read about.
So, sure, that system really looks unnecessary to Te beyond a point because you just need the right facts ordered a little bit to get things working. While to Ti these facts will look too random, disparate without figuring out how they relate to each other. I personally run circles around Te in certain situations where my deeper understanding (that I took time to build first, while Te neglected doing so) allows me to make conclusions to pick the right actions without having to know extra facts for it.
(And sure, Te can also beat Ti in some other situations)
There is another good distinction... where the Te pov is hard for me to understand fully but I think it really is a good distinction otherwise, Ti will treat words as objects relatively positioned logically to each other, while Te will treat each word as its own object that doesn't change logical meaning relative to other ones. So, if a particularly lost IEI walks up to you and tells you "I took it", if you directly inquire about the logical positions of things in the sentence to figure out what the IEI meant, that's Ti, and if you just bark at them, "what are you talking about", that's Te.
Did this make sense?