I've found it interesting that General Conferences often have "themes" - that is to say, recurring visits to a particular topic. It's seems to me that these "themes" are, a goodly portion of the time, not something that is being generally discussed in the church, but warrants dialogue.
To me, this seems like revelation. A bunch of old white dudes know what the membership needs to hear. I realize you could argue that it's just a case of "whatever the bretheren deem important becomes important to the membership", but I don't see it that way. And I'm a pretty sketchy mormon.
The LDS Church hires professional help in crafting it's teachings and speeches and general public image today. Madison Avenue advertising folks. Then they have some committees staffed by their own professionals. . . degreed sociologists, psychologists, social scientists of all kinds.
They also have secretaries or clerks who read all the mail and file reports highlighting current issues per the mail/email from the public as well as local leaderships. . . . All this goes into the hopper, so to speak.
Leaders chosen to give speeches in conference are notified well in advance so they can submit their proposed remarks to the committees, who go over them analytically looking for problematical ideas or phrases, and edit them out. Sometimes the committees completely rewrite parts of these speeches and sorta tell the GA what he can/must say.
The "themes" are carefully selected and crafted, and not "accidental" by any means, rest assured.
The LDS Church has learned to do a lot better than the Holy Ghost.