For some applications, accuracy is still welcome. Doesn't matter how much I would prefer getting rid of WYSIWYG sometimes, I still have to use LibreOffice quite often. And there is nothing more frustrating than inaccurate character selection in Writer or inaccurate moving of an element in Impress (but the keyboard can help significantly).

If no stylus is implemented within the body of this first device, but we still have access to "desktop" applications in some way, I guess I'll have to carry a capacitive stylus anyway. Can be useful, especially on a big screen to reach screen corners or top edge with good accuracy but limited moves.