Outside of Wildcat, I cant think of anywhere else. Sugarloaf comes pretty close (definitely more actual skiable terrain) off the superquad, but you cant get everywhere, notably the snowfields off it.
Yeah, I was thinking about it. Wildcat is one, Stowe maybe (depending on how we define it), Stratton possibly, and maybe Bretton Woods, but it is not above 2,000 vert IIRC.