Fine grained app permissions. Let me deny a certain permission, then when the app needs a permission I denied, prompt me to grant the permission with options for:
"Yes, Always", "Yes, Just Once", "No, Always", "No, Just Once"
I currently have 33 apps on my phone that I've refused to update because I don't want to grant things like:
* Facebook ~ Read my text messages, (Dis)/Connect WiFi
* Groupon ~ Take pictures
* Path ~ Bluetooth Settings
* AnyDo Cal ~ Disable your lock screen?!
* Google Keep ~ GPS (I don't use Keep that way)