It's probably a good thing that emissions testing continues to evolve to mirror real-world driving. I wonder if we'll see a move toward more rolling cylinder deactivation, rather than bigger displacements for the sake of it. Perhaps we'll even see it on hybrids, once the emissions standards really tighten up.
Heck, I could probably be happy as a clam driving my Outback around on one or two cylinders most of the time, if it weren't for the NVH that would cause.