Earlier quoted context omitted.
If you'd prefer a somewhat better regarded personality measure, there's Big 5. e.g. http://www.outofservice.com/bigfive/ (Not sure if this is a good example but... Google)
Which isn't popular with the average Joe, because in contrast to MB, where all the types have somewhat positive names (Architect, Healer, Protector, Mastermind, Champion, Inventor, ...), the big 5 measures personality traits that can be regarded as negative (and which probably are in the context of social interaction). No one likes to hear from a test that they're a disagreeable, neurotic, close-minded person. http:/…
You're exactly right, although if I recall correctly, no-one likes "gatekeepers" ;-)