I would like to have the ability to rotate the screen for any page or app upside down because the lightning cable and/or aux cable can get in the way of easily using the phone in some situations like standing the iPhone5s up.
I do like having both ports on the bottom but I sometimes find myself missing my 4s because the aux port was large out of my way.
Having the ability to lock the screen in portrait is a great start but not all apps or even the home screen will go into portrait. This sounds to me like a simple enough and achievable software tweak. Thank you