The most annoying bit related to getting real work done on iOS is how long it takes to switch apps. Switching from one app to the other should be 1 click if you want to get serious work done. This is how windows and the surface work. 1 click. A taskbar at the bottom. It works. The current iOS takes 2 clicks, a swipe, and a tap. Unacceptable for multiasking.

Now that iIOS has multitasking it changes in an important way. I wonder if it can be a productivity device now. But its still not great when it comes to balancing more than 2 apps.