The front 2 at Wisp still look skiable to me......http://www.skiwisp.com/winter_webcams.htm
You'd have to hike that because from mid-station down to the top of Squirrel Cage is mud.
From the web cams it looks like Wisp is doing considerable leveling, cleaning, etc. work on the new trails, especially Backbone Pass.
I saw that too the other week. Immediately after they closed, a backhoe actually went up and down all of the new trails creating water berms every 100-200 yards. That coupled with some of the images I saw of the edges of the trails towards the end of the season hint that Wisp barely got the trails ready last year. More than likely it's my best guess that they are going back, regrading the trails, reseeding them and making sure there is ample drainage protection.
This past season over on Aces Run on a warm day, it was like a waterfall at the bottom with the amount of runoff.