Apple has always used the approach of limited offerings, but what it offers should work well. Just adding features without those features really being well integrated is the key. Apple doesn't just add a feature that doesn't mesh well with the rest of their devices. If anything, the anti-Android people out there point out how different apps have the controls in different places, and where you use menu for some things, on-screen controls for others, and it can sometimes be difficult to find where some features are.
So, Apple COULD potentially add widgets and the option to customize things, but the problem is how to make everything work together. Apple has also been VERY resistant to UI changes for iOS, to the point where the "task switcher" or whatever they call it in Apple Land looks like some reject from the early 1990s.