Even on WinRT the "desktop" was standard Windows fare. Not much has really changed since Windows 95 as far as icons, layout or the taskbar is concerned. Aero was a nice addition but that's what it was, an addition.
I have my reservations about WoA for the same reasons you mentioned. There is a time and a place for a stylus and a phone ain't it. Steve Jobs was right on this. If we have to go back to hunt and peck with tiny icons at least put on an optical trackpad a la BlackBerry. One-handed operation is the hallmark of a phone, don't make it any harder than it has to be.
Sent from Alcatel Idol 4S with Windows via mTalk