It's a win all around. US factories get more work. Nissan jetisons the design work on a product that they surely don't give a damn about. Plus, it's probably cheaper to design it here with cheap 'merican money. And now derka ders have one less reason to not buy an Import truck. Hemi power.
I'll bet the 5.6L Nissan motor gets added to the Frontier line-up now. They already put it in the Frontier-based Pathfinder.