Not turn this into an Apple vs Android (or whatever) debate, but...
I really don't understand why Apple doesn't introduce themes, or allow 3rd party themes. On an Android, you can often choose from multiple themes provided by the manufacturer. If not, you can always use Apex or Nova or Go launchers and use or make your own theme. If you want, you can make your Samsung look like an HTC. Heck, you can even make it look like WP or iOS if you really want to. But no, if you have an iProduct, you're stuck with your device looking like everybody else's, whether you like it or not.
Maybe that's Apple's plan all along; force a new look on everybody, which'll be hated by most or at least many, and then offer a "Classic" theme or other themes. For a fee from the App Store, of course.