It sounds a little bit like introverted and extroverted versions of cognitive functions. It could be interesting to see those additions play out, but I'm not sure that they would add much (if anything) new to the types that isn't already there. One could argue that iNtuatives work from abstract to concrete and that sensors work from concrete to abstract. One could also argue that Fi is more focused on inner morals (because it is) and that Fe is more focused on outer morals.I have been analysing correlation between MBTI preferences and cognitive functions, and noticed that preferences are pentachotomy, but with redefinition of perceiver/judger preference:
To explain, "preferred input path" is "forward; abstract into concrete" / "backward; concrete into abstract" and "preferred output path" is "perceiver; inner moral" / "cognizer; outer moral".
- [introvert/extrovert] "introvert function the most dominant" / "extrovert function the most dominant"
- [sensation/intuition] "sensation input function more dominant" / "intuition input function more dominant"
- [thinking/feeling] "thinking output function more dominant" / "feeling output function more dominant"
- [forward/backward] "introvert input function more dominant" / "extrovert input function more dominant"
- [perceiver/cognizer] "introvert output function more dominant" / "extrovert output function more dominant"
So the trouble here is finding something new that this fifth preference (and remade fourth) add that is worth disrupting the previous system. It is, however, a cool idea. I've often pondered the possibility of a fifth preference.