we are a jeep family as well. dad has an 05 grand cherokee and the Willys, mom has a 05 wrangler, sister has a 02 grand cherokee. i definitely got the bug from my dad.
i don't see the need either. i have yet to even twist the splines on a shaft. i made new 3/16" retaining plates because i was sick of bending them causing a leak.
why does it look basic? cause there are only a few parts back there compared to front? sometimes simpler is better. i have no complaints with the rear of my MJ