Perhaps I'm just not understanding, but what's the purpose of the new lock system? The way it seems to work now, is it's "locked" until I Touch ID, then it unlocks but I still have to press to get to the home screen? So I can operate the locked screen as both locked and unlocked but neither seems to be in any different state? Except maybe access to your gallery.
There are certain widgets that require an unlocked phone to fully work. For example, Find My Friends. It has to be unlocked to see the actual location. So if one swipes left to view widgets and wants to see locked info, then unlocking the phone is needed but the user doesn't want to go to the home a screen, they want to stay on the widget screen.