Thank you!! Sometimes I think less than 10% who take the MBTI actually bother to try understanding personality theory. It's a wonderful occasion when I come across someone like you who has really done some research and isn't interested in lying to themselves. Everyone thinks they're an NF or an NT even though iNtuitives are the rarest and most difficult to come across. They say "because the test said so" but the accuracy of the test is always based on the test taker's willingness to be honest with themselves. I get sick of everyone lying to themselves all the time. I know that no one wants to say they have trouble understanding really complex things or that they don't catch on right away or whathaveyou, and I know that a lot of people are secretly conceited and don't want to admit to themselves that they're not secretly geniuses that are just misunderstood by their friends. Highly abstracts concepts can be interesting to most people but that . But people need to face reality at least once in their life... let it be about their personality.
You also pointed out that the MBTI falsely correlates T traits with low accommodation and F traits with high levels of accommodation (and pretty much claims that the relationship is totally causal). This is another one of those things that's just silly. For me, it happens to be true, but for my boyfriend, it's completely false. He's definitely a Thinker but he's frighteningly accommodating. People need to understand that saying when someone is wrong or pointing out flaws in a system isn't unaccommodating and - for an INTJ who, Socionically speaking, has almost no understanding of how Se power struggles and societal hierarchies work - it's definitely not meant to be a point of conflict. It's just honesty. A simple discussion about objective truth. INTPs may be more interested in the hierarchies but INTJs actually fear conflict in some cases, just as much as INFJs. The placement of Se in the Id or Ego makes just as much of a difference as T and F do, but that still can't always determine someone's inherent level of accommodation.
You seem like you've really looked into this and know what you're talking about. If you haven't already looked into this, go to
sociotype.com. At first (and maybe 20th) glace, it lacks the kid-friendly simplicity of the MBTI. I believe that's the reason it's so much less popular. It takes
effort to learn about Sociotypes and understand them. But when you do, it will probably be the most rewarding experience you've had with personality theory for some time. The focus on functions is far greater and that sets it apart from the MBTI in a very positive way. Once you understand how that system works, it feels like you've achieved some kind of transcendence (Depp movie that everyone should watch - the Christian Science Monitor gave it a bad rating because the religious possibilities scare them) of the MBTI that you didn't even know existed.