2016 RAM Super Ike Gauntlet

I almost wonder, if all 3 stopped going for more power and did some sort of "Gentlemen's agreement" on power and torque figures (like the Japanese used to do with supposedly 280 horsepower cars) if they could optimize the emissions systems so we could maybe get rid of a few parts, like EGR and more passive regenerations for the DPF? Thereby increasing fuel economy as well.