While the logic of this seems sound, in the PNW I have found that there is such a thing as "too much powder" or perhaps a better way to put it is "more than ideal". Our powder is much heavier and wetter than your Wasatch powder and is a lot more difficult to ride in and you become more limited as to terrain. I have literally been too stuck to move on a 45 degree pitch up here when it is super sticky and skinning in it when it gets like this just flat sucks. Up here, a foot to 15 inches is actually ideal; anything over that in one dose gets to be a pain in the ass. Newbies cant handle it all up here when it gets like this. I have been in your type of dry continental snow chest deep and can still maintain speed on relatively gentle slopes. If someone can ride off piste in the PNW, they can ride anywhere.
I always thought if someone could ride the ice on the EC they could ride anywhere? lol