Just took the 300-question Big 5 test. My IPIP-NEO Narrative Report says:
Your score on Extraversion is high, indicating you are sociable, outgoing, energetic, and lively. You prefer to be around people much of the time. Score: 78
Your score on Agreeableness is low, indicating less concern with others' needs Than with your own. People see you as tough, critical, and uncompromising. Score: 5
Your score on Conscientiousness is low, indicating you like to live for the moment and do what feels good now. Your work tends to be careless and disorganized. Score: 0
Your score on Neuroticism is average, indicating that your level of emotional reactivity is typical of the general population. Stressful and frustrating situations are somewhat upsetting to you, but you are generally able to get over these feelings and cope with these situations. Score: 49
Your score on Openness to Experience is high, indicating you enjoy novelty, variety, and change. You are curious, imaginative, and creative. Score: 83
Honestly, tell me that doesn't sound ENTP (plus average neuroticism) to you.
In fact, if someone said all of that to me and asked which MBTI mold it fits closest to, I would guess ENTP.
I suppose the fact that I'm pretty average on neuroticism makes that particular variable less important to me personally...but I've always intuitively taken it into account when sizing up others. A very neurotic INFJ looks different from a less neurotic one, but they still have enough properties in common to warrant grouping them together. We can just create subdivisions of each MBTI type, so what's the problem?
But I think I've figured out what's going on here: Without really realizing it, I've adapted MBTI's terminology into my own proprietary system which functions essentially like the Big 5, just with different labels.
And I don't see how you can assert that there are only "moderate correlations" between Agreeableness and Feeling, or Conscientiousness and Judging, etc.--they seem to me to be effectively the same concept.
Don't you see that for all intents and purposes, as long as I understand conceptually what neuroticism is, it doesn't matter whether the original MBTI theory covers it or not? If I can grasp the idea and include it in my personal theory, that works for me.