Performance and behavior are the reason for my preference on the earlier versions of SH-AWD.
They removed what they called the accelerator, basically a planetary gear set and multiplate clutch pack that takes power from the driveshaft and is able to adjust how overdriven the rear wheels are relative to the front wheels by selecting between 2 different gear ratios. The accelerator was able to control torque split between the front and rear wheels very precisely. They also removed the 2 planetary gear sets that are found on both the left and right side of the rear drive unit, each of these 2 planetary gear sets have their own multiplate clutch packs, when the clutch pack is engaged it basically locks the planetary gear set and power gets transferred to the rear wheel that's connected to that particular gear set, because the power is mainly flowing through the pair of planetary gear sets instead of the clutch packs unlike most on-demand AWD systems they were able to constantly send decent amount of power to the rear wheels without overheating the system and make it perform more like a good permanent AWD system than a typical FWD based on-demand AWD system.