Good for learning
Small, no challenge for anyone beyond intermediate ability
I returned to Sundown for the first time since I was in elementary school and was pleasantly surprised. I'll give the owner credit, he's just about maxed out what he can get from the mountain. Sundown has always been a good place for families because most of the mountain caters to beginners and you can't get lost. But they've added some features for intermediate skiers who want to be able to competently ski larger mountains. Specifically, I like the mogul runs they set up on the side of Exhibition and on Tempter. Exhibition is fairly flat, the top half of Tempter is short but with more slope and a bail out lane, plus it has the option to skip the bottom half, which is legitimately difficult. A skier can gradually work their way through these three runs and become much better.
The terrain park has a couple of features that get a lot of action, which keeps a lot of the snowboarders away from the beginning skiers, but it also means that there are a lot of kids who haven't yet learned (and don't seem to be getting taught) proper mountain etiquette.
All that being said, Sundown is small and doesn't offer anything steep (Gunbarrel is a glorified blue). There's nothing that can be done about that, it is what it is. The only terrain feature that could be added would be some intermediate glades. It's the best place you can ski in CT, but that doesn't say a whole lot.