I have a hunch there will be more engine offerings in the future for the 3 touring. We are almost certainly going to see another 6 cylinder diesel in the US and possibly the 320d, if those engines are being emissions certified for the US, then offer them in the wagon why don't you? Not having an F11 wagon should be plenty business case to at least offer a 335i touring in the US.
2011 E90 335i M-Sport 6MT Alpine white - saddle brown
2012 E70 X5 35d Sport Activity - Alpine white - black
2005 Toyota 4Runner 4WD Sport Edition Silver