In my searches (mostly out of curiosity, I found one big consideration is monthly association fees. Taxes in a lot of places I've checked are actually lower than her in my home town, but I've found $350 to $450 common monthly.
While you sound well along the consideration of all costs, and I'm likely sounding like Mr Obvious, the things I've found needed (which stopped me from consideration) was monthly morg (rates are great though), monthly assoc frees, taxes, insurance if renting, management fees (a few places I checked out were at 50% the rental rate) and when narrowed down, the occupancy rate of the unit. Some are great, some poor. finally the anticipated increase of value over time .. many resorts run up ave of 5-10 % a year. PC is pretty closed to new building so theory would hold it should see faster increases over time verses other locations. Not sure on Summit Co. Agree proximity to Airport is very nice for SLC.
Occupancy rates vary greatly and from resorts I'm more familiar with, some slopesides have good overall year round rates, others just down the road are only winter rentals, empty 34 weeks out of season.
Of course, I've spoken to some folks who look at it as a why into a town, for visiting and when closer to retirement, selling the condo to buy in town where more year round families reside.
One of my wife's cousins suggested a self directed retirement plan, where one buys the unit and in essence, ties retirement savings into the unit, it's gains (risks) etc and then rent from oneself. I haven't quite taken the leap to even check out the requirements, etc .. but sounds as if it could be an option.
Then, Global warming could do it all in for many places. I don't subscribe completely to the idea but could agree that we may be in a longer term shift in weather .. earth wise, a 10, 20, 100 yr pattern is something we can't even predict.