IanB, I thought the trail was in pretty good condition. There was some mud and some people are starting to go around the mud and making new trails. I thought the blowdowns weren't very interesting but some people in my group were complaining about having to deal with them on the return trip. Even the river crossing was okay. I used logs slightly up stream and never got my boots wet. Most of the others waded through almost knee deep water. We went when there was flooding on the trail from two days of hard rain.
The contractor had never been backpacking and he made it in and out in two days...barely. He's the older guy with the tape measure (((pictured below))). The guy in the foreground is a cabin mover from Alaska and the other guy is in politics, fighting to save the chalet.
The Forest Service is out of money so they took what they wanted from the chalet and left it to fall into the river during the spring melt out, never mentioning moving it as an option. Well it didn't fall into the river and now there are plenty of volunteers including a huge group of backcountry horseman volunteers ready to help once a plan is approved. They would grease up steal beams and slide the cabin to a location further from the river where it will be safe for many more years. That is, if this is left to the public which it probably will be.
Anyways, I feel confident saying the backpackers here will find this an enjoyable hike. Even if you don't make it all the way to the Chalet there are plenty of places to camp and plenty of wildlife along the way.