I want to expose a theory of mine to the light of scrutiny..(peer review).

It is my humble (most of the time) opinion that if you are building a drivetrain the strongest part needs to be only stronger than the amount of friction you can put to the ground under ideal circumstances..(not counting stupid attacks like 5 grand,sidestepping the clutch in 4 lo trying to bunny hop a 3400lb jeep.)
Anyway what I am saying is.. if all the parts in the drivetrain are strong enough to withstand 500 ft lbs from the engine and the tires are spinning at 300 ft lbs.. nothing should break (unless it's worn out) or you shock load it as above..

or on the other side if the weakest link in the drivetrain is say .. a front axle u-joint that snaps at 2500 psi.. putting in a warn hub fuse that strips at something slightly less and you should have a "break proof trail rig?