I've used iOS since the iPhone 4, and have strayed every so often due to Apple's lack of customization, before quickly returning back to iOS due to their amazing build quality, eco system, customer service, and overall software stability.
I am wondering if they will ever give users full customization such as being able to change your font system wide, the ability to change the look/size of icons, etc. I know this is all achievable with a JB, which I have been doing for years now. I am just wondering if Apple will ever have a device that is capable of the before mentioned customizations out of the box without having to JB.