The Book of Mormon Archaeological Forum held its second annual conference last weekend in SLC (program here). Looks like a watered-down reincarnation of the NWAF, but I'll let you be the judge. Note there are three GAs on the Board. A DN article summarized the remarks at the conference of an emeritus GA who apparently has a strong personal interest in identifying Liahona legends in various South American cultures. His interest stems from "a vivid dream years ago while living in South America that made him a 'Liahona seeker.'"
Mormon leaders take dreams quite seriously--this GA seems to have treated this dream as a directive from God to become a "Liahona seeker" and, one would surmise, as divine confirmation of the historicity of the BoM account of Lehi's round ball of curious workmanship, later termed "Liahona." There is also Elder Packer's well-known account of BYU President Brimhall's dream of the snow-white birds (scroll down, it's in the third talk), which appears to have inspired Elder Packer's conservative philosophy of LDS education. These are cases where such dreams are publicly acknowledged. I wonder how many doctrines, policy changes, or programs are due to dreams taken to be divine guidance by leaders but never related to the general membership? Given the LDS emphasis on dreams and vision, I'll bet more than you'd think.
The problem, of course, is that most dream content results from our own daily experience, recombined and symbolically re-presented during sleep. Furthermore, there is no objective way I have ever seen spelled out to guide a dream-believing GA to distinguish between personal dreams and divine ones. Is there an "Office of Dream Interpretation" somewhere in the COB to provide such assistance? Otherwise, it's just an ad hoc and totally arbitrary determination. If a leader dreams tithing should be cut to 8% or there are too many missionaries serving in the field, they wake up and say "nightmare" (or worse). If they dream that we need to double the number of temples or bring wayward Saints back into activity, then it might be divine "dream guidance." See the problem?