Good to know about dog etiquette at huts. Also good to know that my Minnesota winter snow experience doesn't directly correlate. I've done a fair amount of backcountry skiing in Wyoming, Montana, and Washington as well, so at least I have a moderate amount of confidence with deeper/more fragile snowpacks. Thanks for the reminder, though!
Maybe it makes sense to separate all of the various elements that I was hoping to compile into one trip.
Spend a few days skiing inbounds until she gets her turns down - maybe someplace smaller like Ski Cooper or Monarch in BV. Then spend the next day or two hanging out at one of these affordable backcountry cabins. The Hutchinson-Barnett spot sounds great - although there isn't much literature on-line about what it is or how to get there. (Would it be cool to bring a dog there...or should the same hut rules apply??) We'd probably have to sweet talk someone into giving us a sled ride up...or use an entire day walking the 8 miles in.
After a bit of powder skiing, then we could head to a wilderness area for a couple of days. Build our igloo, enjoy some hot springs, etc. Weminuche looks like a gorgeous area for an adventure like that.
Thinking that this is starting to sound like a wonderful trip. Again thanks for the advice and feedback. If anyone has more suggestions, throw 'em my way.