Some people are paid to be heard, instead of spending their own effort on it.
This depends on how valuable one's opinion is in the eyes of the people around. If you think that the high-class people you hired after a lot of sifting for the best-fitting candidates are really valuable, and may harbor interesting thoughts, maybe an effort should be exerted to get these opinions from them, in the way comfortable for them.
Everyone does better with a support system, for the reasons you state and more.
Other people's attention is a limited resource, and the more someone can do on their own to engage everyone else, the better off they and everyone else will be.
This depends on how valuable one's opinion is in the eyes of the people around. If you think that the high-class people you hired after a lot of sifting for the best-fitting candidates are really valuable, and may harbor interesting thoughts, maybe an effort should be exerted to get these opinions from them, in the way comfortable for them.