raskol said:
In sum, there is no golden mean to be applied between the two theories. For all in-depth purposes, stick with one and abandon the other.
So yes, I also think, as you do, that they differ in structure -- to be clear, as you might have gathered, when I say there's no reason to use one set of definitions for one and another set for the other, I certainly don't think we should view the differences are
limited to a difference in definitions. It certainly seems to be the various theorists differ on things like how much the unconscious plays in, e.g. Jung a lot, Myers less it seems (this is what you likely mean by repression) Rather, my aim is to say the difference in definitions is certainly there, but that it's not clear we can just use the different definitions for different purposes and say the systems can just coexist harmoniously.
Rather, I think both aim at describing the psyche, but divide it up in different ways (as you say, that can be done in a more Jungian or Freudian way), and assign different ways in which the functions/IE/etc develop roles based on how they see the psyche as structured, and we ought to figure out which divisions are well-motivated and reasonable.
My general idea is neither the structure-of-psyche differences nor the differences of definitions of functions is suggestive that we can use one compartmentalized for one purposes and the other for others -- rather, they seem to be different theories of the IE/functions and their roles. So, if anything, not only do I also, like you it seems, think we shouldn't find a balance between them, but rather think we should probably take the good ideas (if any exist) from each and find out the truest theory without believing either necessarily.
I think they're getting at the same thing not in the sense that they're
saying the same thing so much as they're both theories of the roles of introverted-X and extraverted-Y in the psyche... but they can differ in nearly every way besides that (what exactly they think introverted-X/extraverted-Y mean, and what roles they should play AND what roles are
available to play based on the way the psyche is divided), and that's a matter for us to sort out and find out the best theory from, potentially discarding large parts of both.