Guy wants to change his keyboard to an ABCDEF type keyboard. Leo says that's not a good idea because QWERTY is the standard everywhere. But Leo can see why it would be beneficial from an accessibility point of view.
There is a site called AppleVis which talks about an ABCDEF keyboard for iOS devices and Apple just opened up iOS8 for third party keyboards. So it's only a matter of time before someone writes one.
ScooterX in the chatroom says that there is one called KidsKeyboard, which is a simple ABC layout for iOS. It's $0.99.