I am aware of the Australian requirement for repeater lights (although Mercury is starting to use them on all of their cars). They also do NOT require side reflectors, front or back (???), but the amber turn signals just look too cool---and they're made by Visteon (in Ohio), right next to the ones made for the US market. It would seem to me that maintaining ONE set of lights and wiring harnesses would be cheaper than several, but then I'm not a $400,000/year "cost analyst" (firing the cost analyst would be more cost-effective :)...
The Australian headlight also has an extra bulb above the high-beam, just as a marker (probably their version of a burned-out-headlight marker). Of course, we don't get that, either.
Personally, I don't understand why Ford chose to go back to the simple one-bulb taillight. I don't buy the "trailer connector" argument. The wiring for the standard trailer is already there, as it was in the older Explorers that had amber signals.
And, although I can't tolerate even LOOKING at the last of the Oldsmobile Bravadas (which will now live on as the butt-ugly Buick Rainier), they did have one thing that really stood out---their taillights.