M-B doesn't give you discrete categories but a gradation

Myers-Briggs Type Indicator

The statistical validity of the MBTI as a psychometric instrument has also been subject to criticism, in particular, the dichotomous scoring of dimensions. For example, it was expected that scores would show a bimodal distribution with peaks near the ends of the scales. However, scores on the individual subscales are actually distributed in a centrally peaked manner similar to a normal distribution. A cut-off exists at the centre of the subscale such that a score on one side is classified as one type, and a score on the other side as the opposite type. This fails to support the concept of type--the norm is for people to lie near the middle of the subscale.

BTW, I had a look at the test and I find many items highly questionable from a methodological point of view. For example, these questions:
"You tend to be unbiased even if this might endanger your good relations with people"
"Strict observance of the established rules is likely to prevent a good outcome"
"It is in your nature to assume responsibility"
"You easily see the general principle behind specific occurrences"

I find several problems:
These questions use polysemous words without clarifying their definition
Many of them are value-charged
A great number could/should be answered by something else than YES or NO
The whole test presupposes you have an objective vision of yourself...

"Dieu se rit des hommes qui se plaignent des conséquences alors qu'ils en chérissent les causes" Jacques-Bénigne Bossuet

Apparently this makes me a Counselor type. Which I would find flattering.

Keirsey Temperament Website: The 4 Temperaments

The Counselor Idealists are abstract in thought and speech, cooperative in reaching their goals, and enterprising and attentive in their interpersonal roles. Counselors focus on human potentials, think in terms of ethical values, and come easily to decisions. The small number of this type (little more than 2 percent) is regrettable, since Counselors have an unusually strong desire to contribute to the welfare of others and genuinely enjoy helping their companions. Although Counsleors tend to be private, sensitive people, and are not generally visible leaders, they nevertheless work quite intensely with those close to them, quietly exerting their influence behind the scenes with their families, friends, and colleagues. This type has great depth of personality; they are themselves complicated, and can understand and deal with complex issues and people.

BTW, if there will be a B-M compass, I think everyone should do the same test. I just googled my way to one.