I'm not sure if the customization option would come anytime soon, but a dark theme would very likely come out in 2017 when Apple releases an iPhone with an OLED display. It most likely wouldn't come if the lineup is all LCD (as it has been so far). This is all about battery life, which Apple obsesses about a lot. Assuming there's just text on the screen, with LCD, black text on white background would be better for battery life, whereas on an OLED screen, having white text on a black background would be better for battery life.
Edit: While Apple has shipped (LCD) iPhone models with new versions of iOS and sometimes darker wallpapers, my point above is more about many of the Apple apps, including Settings, Mail, Reminder, and so on.
That being said, I would buy the OLED iPhone in a heartbeat but only if it has bezels and has no curved screen. These fads are making normal human usage of the phones a huge annoyance and really need to die.
I'm very sad that I am seeing exactly the opposite: many people FINALLY got their brains warmed up and figured "Hey! Samsung did it, look how well their S7 Edge sold! Let's do the same!"... that's awful, sigh. They absolutely don't get it.
This option exists in the form of battery cases.
I'd prefer the bigger battery to be a part of the package.
- Dark theme. Customization = good. Sends a good message.
- More separate volume controls. For me one volume level for notifications and phone ringer is absurd in 2016.
- LCD displays, really? The iPhone 7/Plus and the iPad Pro 9.7" are first of Apple's devices with an almost 100% correct color reproduction on the professional scales. About time for [s]AMOLED displays.
- More privacy settings and abilities to break the sandbox if the user so desires. If I want 3 apps to have access to the same vault of files, then I should be able to!
Since I sold my 6S Plus back in July I forgot the rest of my complaints but I remember them being between 10-13 in total.
That I absolutely agree with. The obsessiveness with thin phones is something many of us hate with passion. I am a 115kg man at 184cm and pretty strong -- and a bit overweight :D -- and I honestly can't tell the difference between 140 and 200 grams in my hand. I'm sure a 300 or so grams of a phone would be perfect for many people.