Implementation of these changes would likely require a shift in Apple's attitude toward iOS. Currently, it gives very few options to customize the iOS keyboard--presumably in an effort to keep things as simple and easy to master as possible. I believe it's time for this to change: The iPad and other iOS devices have attained a level of maturity and user familiarity such that Apple can offer more customizing controls without the risk of alienating or confusing users. As Apple works towards its release of iOS 7, we'll soon see if the company agrees.
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