Becoming a better version of our personality type tends to be the focus of Myers-Briggs and other typology systems.
However, as Steve Myers writes in Myers-Briggs Typology vs. Jungian Individuation:
…as the Jungian analyst Joseph Wheelwright put it, the most important thing about types is detyping. The aim is to give full parity to the inferior so that – as von Franz describes – the conscious structure collapses and something new comes up. This transforms the personality, making it more whole and individual.
Myers-Briggs Typology vs. Jungian Individuation by Steve Myers p. 185
Detyping is the same thing as the “transcendent function” that Jung described in Psychological Types: “Individuation is closely connected with the transcendent function… since this function creates individual lines of development which could never be reached by keeping to the path prescribed by collective norms.”
Anyway, I like that word “detyping.” Rather than focusing so much on being better at a weaker function in the personality, typology should be more about becoming our unique self that transcends a particular personality type.
Sources:
Myers-Briggs Typology vs. Jungian Individuation by Steve Myers
Psychological Types by CG Jung