I made it there for opening day; I work for a company that's been working VERY closely with Tamarack on a number of fronts, so we all got a paid day off to ski and join in the opening day festivities.
Consider a few things about Tamarack-
1. I was there in mid-December, and there wasn't much snow
2. the grooming wasn't great, but it was opening day. Give the groomers some time to get used to the terrain.
3. the village hasn't been built yet
4. the resort isn't supposed to compete with Sun Valley or Whistler; they're going for exclusivity. They only sell 1,500 tickets a day, they're selling property like hotcakes for big dollars... it's a 4-season resort for the well-off.
5. there isn't much terrain open yet. give it a few years for them to get all the real estate sold, and they'll start opening up more terrain and putting up more lifts.
They're spending a lot of time, money, and effort on this. When the dust clears, the money's raised, the houses are built, the village is standing, and the kinks are worked out of the system, Tamarack is going to basically be a mix between Sun Valley and the Yellowstone Club. Don't worry about the terrain either... people around here have been backcountry and cat skiing those mountains for years and I've never heard a negative word about it. Plus on a sunny day, you're skiing up above the lake and it's supposed to feel a bit like Tahoe.
I have some pictures up at:http://www.bjtuna.net/gallery/tamarack-grand-opening