I think the interaction of types in socionics is overly-idealized.
I think things along these lines are rather bullshit. I won't deny certain interaction of the functions, but it doesn't translate to intertype relationships.
The first problem comes with the ID functions. Their very existance throws off the reliability of intertype relationships. Our ID is supposed to be strong. And we are able to use it. I would argue that the Ego does not exist without the ID. Yet, our ID is completely irritating to our beloved Activity and Dual relations.
If this is the case, then at times an Activity could turn into a relation of Conflict, for example.
What I understand about the the ID-Ego is that they go hand-in-hand, pulling each other along. It is because of the energy levels of the functions. , for example is said to be relationships and associations of "objects" (for one thing), yet has nothing to do with the outside world directly. That would be what we call . So, in order for to opperate, it needs to turn on and off to occasionally. can sometimes doubt whether or not it needs outside objects for stimulation. That is of course just silly, but it happens when the is ignored. In other words, feels really crappy without the influex of , although we try and minimize the use of to a minimum. Heh. This works with all functions.
Now back to Acitivy. How would this "need" change that relationship? Well, you're Activity partner dreads your 7th function... even though you are a slave to it! How comfortable is that relationship?
Also, couldn't you learn a lot from so called "bad" relationships? Quasi-Identicals? Contraries? Super-Egos maybe? Who's stopping you from using the ID? Maybe it would even be liberating! Thoses damned Activities are holding you back...
This would also bring us to the reliablitiy of the Quadras. Do they really describe social order? I doubt it. Plus, they draw lines between types which may actually be good relationships.
And now the conflict. Conflicts are irritating. Yet, maybe you need it. You need someone to slap you across the face and say, "Stop being such an ignorant fool, bi-atch!" The Super-Ego is a point of irrational fears and it would be rather harmful to keep on running away from them. Does it really suck when someone "pinches that nerve"? Yeah, it hurts. But I'd bet if it hurts enough you'd make note of it and change your ways.
So what I am saying may hurt the die-hard socionic followers. The ones who say that socionics does not exist without other people. But I think that socionics is rather flimsy in terms of interpersonal help. Socionics should be more geared towards the individual, helping people understand themselves better, identifying their strong and weak points, and helping them become more of an independant being. Not predicting future relationships.