That makes total sense, but I still don't understand why this would contribute to end cases or transfer cases splitting. What makes more sense to me are the gears, helical gears vs straight cut, helical gears, with additional torque will want to push away from each other, which splits end cases, which, still makes me believe, with higher HP/TQ cars, you'll need to A) Modify the gears to straight cut, like supercars dog box, or B) Beef up the end case via Broomfield or someone else along with beefing up the brace for the transfer case, or the case itself.
What you're describing, Pivot type mechanical shifting vs. hydraulic shifting, that would, in my opinion, seem to only affect clutch pedal feel, hydraulic would be a lot easier and smoother, which would be a lot nicer when you ARE running a heavy pressure plate.

