Also keep in mind that you shouldn't expect much help out of UA as the itinerary is split and QF isn't even a UA partner. You might get a little bit of sympathy, but I wouldn't count on it.

The mountain airports are currently covered for Friday (tomorrow) for the current wind/snow storm, and this could very well be extended for the next storm coming in from the PNW that you are worried about.

I would definitely agree that GJT and EGE are good options to call and ask for a re-route.