If what we are all after is improving the usability with some eye candy thrown in, I am not sure i understand why we combined the NC/SBS type settings in the app switcher. The app switcher obviously if for switching to apps quickly. To do this, ideally you show as many recent apps at one time - with one gesture/click. Similarly, the whole reason for SBS/NC settings is to more quickly access fav settings. This fits best in the NC (or even as a widget if you like that) or some other hidden panel accessible with one gesture/click. Minimal space requirements. That way, with one gesture for AS and one gesture for NC, you have the most optimized access to both. I thought Auxo was great but why am I going to swipe three times to get to settings when I can access them right from the NC/other.
I know this is personal preference this is just what makes the most sense to me.