Mark Ferguson-
While I can't answer your question as to what the 'perfect' design brief is, I have heard stories from both sides of the fence--and I think one can argue it from both sides; should the owner be actively directing the architect or should he serve as the conduit to let creative architecture create a fun to play, architecturally significant, and interesting golf course for its constituency?
Pat had a post several months ago on owners with vision; I think in the cases he cited, these are people with a very clear and unique picture of what they would want to accomplish--and I think the results have been outstanding. PV, Hidden Creek, Bandon, Whistling Straits, Sand Hills, just to name a few. (There are other courses developed that are inspired as well and not listed here--these five places are not the only ones)
For every inspired example, though, I have also seen some that really didn't resonate with me--they just seem to lack a certain something, and I couldn't help but think to myself "Why was this built, besides ego and having the means? What does it contribute, and to whom?"
Now, it's easy for us to sit here and armchair quarterback, quite another to actually be engaged in the process. Thus, I'm trying to be careful of providing thoughts, opinions, and observations while not treading on the "Well, it has to be this way..." because I'm not a course developer, nor an architect. But I have seen plenty and heard many stories to have my own opinion.