A good number of employees here, including myself, have just completed training given by Management By Strengths. Very enlightening.
I have yet to hear what employees are to do who do not have the dominant personality type, but want their ideas heard. The coaching from MBS was to 'talk the language' of the recipient's personality type. It would seem, though, that those with the same personality type as their manager have a natural advantage over those who do not. If a manager is a dominant type, prefers face-to-face, results-orientated communication, he may likely not give equal credence to input from those preferring email, or unassuming presentation of ideas, groupthink.