Japanese discs have the sublime consistency too, with the silver slice with Saturn logo on the lower half of every single one. They're just too classy. Nintendo cribbed the motif for the similarly classy gamecube discs.
I've posted about this before, but I'll mention it again -- SOA's inconsistent branding drives me bonkers!
The US Saturn *may* be the closest they have come to packaging brand consistency (even the Dreamcast switched up the colour scheme mid-cycle from white to black) but the Genesis is easily the worst offender.
The 32X came close, but the pantones are off on a bunch of the boxes (compare the yellow spine of DOOM to Space Harrier for example) and Activision had to fuck things up by going with clamshells instead of cardboard boxes. (Sega should've gone with clamshells to begin with, but Sega is gonna Sega...)
The state of the SOA packaging is a metaphor for the way Sega managed their operations, IMO.