I enjoyed the Grading System in your post!
I am looking for the shot I took coming off of
Stetattle (Sourdough) Ridge in a lightning storm several years back. It was fogged in and I misjudged where the Sourdough Trail made its last switchback heading down to Diablo. Make the descent of the 45 degree slope covered in salal and thin Alpine Fir in a series of spectacular tumbles and slides down all 4,000' to the Stetattle Creek Trail. Neather hail, lightning bolts or wet undergrowth can deter a climber who know a dry bed, clean clothes and an Irish Whiskey awaits him! Had I gotten seriously injured on this one no one would have found me since in the "Good Old Days" SAT Phones and Beacons were not invented and I was coming out after five days solo in the Southern Pickets. I classify this one as a B-5 A A meaning airborne part of the bushwhack!
I grew up in the Olympics. My first climbs and backpacks were there. My most difficult bushwacks there would be the Queets River Basin by way of the river, Mt Lincoln "Trail" to the top of said peak, and the Mildred Lakes from the Hamma Hamma River.
Suspect by now, with all the use the Olympics get that all of these are not nearly as bad as when I did them in the 50's, 60's, and 70's.
In the late 1990's I decided to hike in to Royal Basin an area I had been to twenty years earlier. My first trip there I saw exactly two backpackers in three days. On my 90's trip I counted nearly 100 people spead out in the basin. Looked like Yosemite Village.
Made a quick exit and have only been back once since that time to the Olympics. Just too many folks out there for my taste.