I had this idea that I wanted to share about having "plugin" application. That would allow your app settings to be in the UT settings. That would give a better feeling of integration to the platforme. For example, the indicator weather app could have no "useless" app in the drawer and only be setup through the setting app. Or an application like the vpn editor could just remove the vpn section in the settings and replace it so you don't have two vpn setting with one being "useless".
I find the idea interesting, it can be useful