Nosevi
Head Pro
I can understand the delofting to decrease the launch angle, to counter the effect of a low c of g argument.
But why make the shafts longer?
This to me makes no sense.
There's a point in making a given club give more carry - I don't think I'm alone in finding a 9 iron more accurate than a 6 iron but that's down to a shorter shaft length, you have more control over the club face. However much it 'irks' some, having a club that launches the ball on a similar trajectory (albeit with a lower loft but the CofG means for a given loft the ball launches higher) but goes further does have a point. If you also have to lengthen the shaft in order to get the clubhead speed necessary to launch the ball I think it's utterly pointless.
My new irons launch at exactly the same trajectory as my old (use a launch monitor daily) yet give a tad more carry. Shaft lengths are identical but lofts are about a degree cranked down I believe. Gives me the trajectory I want but a few more yards so I can be hitting my PW or 9 iron into a few more greens. For me, that helps my scoring.