Mt. Fox delivers a punch. More than 500 vertical meters of continuous class 3 with occasional class 4 climbing. Mostly no slip zone - a fall would be fatal. The scrambling never gets too hard but the constant concentration slowly wears you down. Rock is generally solid where it needs to be, but in one spot I couldn't find a reliable hold.
The crux for most people are the famous pinnacles. After a few awkward class 4 moves (possibly low class 5), I went straight through the tiny "window" (other people dubbed it the "birth canal") and got stuck with my backpack until I managed to unstrap it and lower down. This route is not recommended for people with larger backpacks. My partners bypassed the "window" on the left side.

We descended via West scree slopes and Elk Lake. Although a safer route, It didn't save us time and was not enjoyable. Initial 500m descent to the meadows is easy. The route gets complicated below the treeline towards Elk Lake. Several cliff bands required a careful navigation to find weaknesses (moderate scrambling). For last 200m to the Lake, the terrain gets near vertical. At the shoreline, we had to bushwhack through nearly vertical cliffs using trees for the balance. It was brief but brutal. Then we had to cross a couple avi paths with broken timber until we managed to pick up a faint trail.

A possible better descent route would be to turn sharply left 200m above the Lake towards Mt. Fox east face and descend a more gentle terrain. It looks possible to descent SW slopes straight to the Lake avoiding the meadows. Hard to tell if this route will work - looks like a few cliffbands need to be downclimbed with a potential to get cliffed out.

In short, I think it's better to descend the normal route unless you are scared of downclimbing. The Elk Lake descent route is a nasty but way safer option.