The North Ridge/Glades triple could be closed, all it's terrain is served by the K1, and it's usually empty midweek.
You could also close the Superstar Quad, although it would make some things a bit inconvenient (especially if you're coming off the Snowshed Crossover), you can access almost all of it's terrain from multiple other lifts.
Other than that, there's nothing they can close without losing a lot of terrain. (Sunrise triple is required to run, so it can't be closed).







