I feel that a lot of this talk about "fit" and personality types is completely off the mark. The most important personality in a team member, in my experience,

I feel that a lot of this talk about "fit" and personality types is completely off the mark. The most important personality in a team member, in my experience, is emotional maturity (though perhaps there is a better name). What I mean by that is the ability to accept criticism in work without feeling personally offended, being able to discuss a topic with the goal of reaching the right answer instead of your answer. If a team of people have that, they can make it work, even with different personality types. In fact, different personality types make for more dynamic teams.