I guess I got mixed up there - I was thinking toggles for common used settings in NC. But weather would be nice on the lock screen. Also some sort of notification that you've received messages would be nice. A friend of mine who upgraded to an iPhone has told me they really miss that feature. On their Android phone they didn't even have to turn it on to know if someone had sent them a text.
Something else I'd love is a setting that would automatically turn Wi-Fi on and off based on my location. For instance when I'm at work I usually turn Wi-Fi off since we're not supposed to use company Wi-Fi for social media, streaming music/video. I set up a location-based reminder which works okay but having iOS do it for me would be cool. Of course I'm not sure how it would function if you manually went in and changed the setting, I know sometimes at home if I'm downloaded something I will turn off Wi-Fi because LTE is faster. But again if there was a way to implement I think it would be cool.
I agree that smart Wifi in the OS would be awesome and would help save so much battery life. If Apple doesn't make it something thats system level, the ability to turn it on/off faster would be great.
Also you currently CAN make your iPhone flash whenever you get a notification similar to android. Settings > General > Accessibility > LED Flash for Alerts > On.