I have pretty much the same thoughts as Sean and Craig--although we're not supposed to care about such things, right, I will say that Chateau Whistler was one of the most visually stunning mountain layouts I have ever played. The wildflowers, the tips of snow late-season on the mountain backdrops, the Alps-like peek at some of Whistler-Blackcomb village from some spots--really quite dramatic, and I think makes it worth the play when in the area.
I think, however, that the better player would likely get more kick out of Big Sky (30 minutes or so away) and Nicklaus-North, from a player's standpoint.
Don't make the rookie mistake of Furry Creek, although it's hard not to gasp when you pass the hole on the highway...
One other thought---your friend should consider playing in Vancouver, at Capilano, Shaughnessey, etc., as I think most would greatly favor those (among others in Vancouver) for quality over the Whistler courses...
Peter