I skied Northstar for the first time this season on Monday. No lines, but also no new terrain open since they opened Comstock last week. The snowpack is marginally skiable off-piste in some areas at the higher elevations, but pretty much everything except shaded north facing has gone through at least one or two thaw/freeze cycles so it's difficult to find soft turns. By this point most folks are just sticking to groomers or using their rock skis on the natural runs that are open.
BTW Kirkwood posted its opening plan on its IG story today, screenshot attached. Only Solitude, TC Express, and Bunny lifts expected to open, which is a bit disappointing. Today's OpenSnow Tahoe report says that strong inversions have come into play and that it's not getting cold enough up on the hills to make snow anymore, and Kirkwood has limited snowmaking capability anyways. Also in my backcountry excursions I've noticed that south of the lake the snowpack falls off considerably -- Waterhouse Peak off Luther Pass was barely skiable last week, with much less coverage at similar altitudes vs Rose and Castle Peak areas. Haven't been all the way down to Carson Pass but I'd wager that one or more of the storms that came through in November must've fizzled out before it got down there.