In his wonderful talk, "Concern for the One", Elder Wirthlin said we shouldn't value just the piccolos in our orchestra. Something to consider:
Piccolos are the most easily heard instrument in almost any orchestra, since they are pitched so high. (I view piccolos as mutant flutes - designed specifically to be heard above the other instruments.) So, we shouldn't value only those who are heard the most or the most easily. (e.g., Just because I talk a lot, doesn't mean anything I say is more valuable than something a more quiet, reticent commenter says.)
Many of the most profound things I have heard in church have come from the quiet members whose experiences make what they do share incredibly touching. There are many members from whom I would LOVE to hear more than I do, but when to comment is up to them individually. That's one reason why I enjoy Sacrament Meeting, even with the duds. The format gives me a chance to hear from those who normally don't contribute in an open discussion setting. I generally learn more from them than from an hour long class.