Snowmass is fantastic for green/blue/blue-black skiers who like groomed rums.
Aspen is a (maybe THE) classic American ski resort. You can't go wrong going there no matter what.
That said, the reasons cited to the OP for NOT going to Grand Targhee are the exact reasons that still make it one of the most uncrowded, high-quality snow experiences left in America. It's hard to get to, not much lodging or amenities at the base, cold, etc. etc. etc.
As long as those opinions persist, it will continue to be one of the most uncrowded places left on our continent to ski on a powder day.