I see what you're saying now. The only alternative I can think of is to go into Settings, Connectivity, and enable Bluetooth (which disables the wireless CP to my knowledge). That's still a pain but only way I can think of...
I could be wrong, but disabling all of the data you're sharing should get rid of the notification.
I haven't yet found a fix for the couple second lag when switching apps, or the resume audio question.
Do you have audio quality issues when you get close to your home wifi? Mine will pause CP...