I know the "why" behind it, and the 3.0TT sounds interesting, but I would not be the Beta tester for them. I am also generally in favor of more efficiency, but this simply isn't efficiency. Efficiency is about more work for less money, not # of invisible gas per...
With tighter and tighter gov requirement, I can soon see the day each manufacturer has about 3 total options in engines; instead of the dozen most have across their platforms. Way to much time and R&D budget to have a 1.8, 2.2, 2.8, 3.6, 3.0TT, 5.7, 6.2, and 6.4 engines. That cuts across all of the engine makers.