Why has Sony abandoned Quick Navi in APS-C cameras?

I feel that one of the top two reasons I stayed with a Sony DSLR and did not jump to Nikon was the Quick Navigation (a.k.a. Quick Navi) user interface on my a700. I think Quick Navi is the best GUI of any APS-C camera out there. IMO, Quick Navi is just brilliant because it allows you to change parameters quickly and elegantly in a number of different ways. Which all makes me wonder why in the heck did Sony not include this great feature in any of their newer APS-C cameras??

It just seems very strange to me to leave off this elegant feature which would set the Sony Alpha cameras apart from the pack and replace it with a more clumsy menu driven approach like Nikon does it. Could it be that QN is too expensive to implement? Or did Sony think it was too complicated , for newbies?
Just seems really odd to me.

-Phil