I agree, the launcher isn't as customizable as a linux desktop. To change the entirety of a linux user interface is much easier on a linux desktop. But nonethel

I agree, the launcher isn't as customizable as a linux desktop. To change the entirety of a linux user interface is much easier on a linux desktop. But nonetheless, Android is still quite customizable, and the other interfaces you mentioned (nav bar, pull down menu, etc) are still customizable if you're able to flash a custom ROM. It's all possible, but desktop Linux is much easier to fiddle around with in that manner. Nonetheless, I think Android should've been left out of that group in the OP. Not a big deal, but for someone who used to tinker with Android quite a bit, I couldn't resist commenting the point.