I agree, but I also think this falls into the category of "good problems to have". The unfortunate reality is that all software has the tendency to accumulate "

I agree, but I also think this falls into the category of "good problems to have". The unfortunate reality is that all software has the tendency to accumulate "features" like a katamari. Apple knows this, and so I think they are being deliberately slow about introducing new features to iOS. Remember how long it took to get copy/paste? The introduction of extensions, notification center widgets, custom keyboards, etc. in iOS 8 shows that Apple knows they still are light on features and are willing to add them, even if the pace of addition is glacial...