I met with the Nissan dealership to discuss the dragging back end. They report that there are no problems other than "normal" sag. I do a lot of mountain biking so leave the Northshore 4 bike rack on most of the time, and typically carry 2 bikes. Nissan says that'll make the rear sag -- annoying.
Here's the build we're considering:
Suspension lift: MK84, 2" (including rear leaf spring pack, rear shocks and adjustable front cam bolts)
Bumpers: Shrockworks steel rear with 2" receiver and recovery points, Hefty aluminum front w/ winch (probably Warn 8000lb synthetic line)
Armor: HeftyFab full skid plate package (aluminum), Nisstec rear shock skids, Shrockworks differential cover and rock sliders
Been following you, BCBrian and Maxterra -- really helpful!