Why would this even make a difference? Most computer users do not in fact create content. Go back to the pre-tablet era and you find tons of "normal" people who have desktop computers for simple things like email and web browsing. Their systems were capable of far more, but they didn't need any if that. They also didn't upgrade more than every few years, if even that. Look at the surge in new PCs recently because of all those ancient XP machines being rendered unsupported.Unless Apple is offering some drastic improvements in iOS, most customers would still use the iPad for content consumption - and not creation. And for that there is simply no need to upgrade every year.
These people were/are perfectly served by tablets; tablets which focus on media consumption and make it super simple and fast. The lack of content creation proficiency is what makes tablets so great. They do a job really well that a lot of people need. They'd be less suited to their core audience if they became cluttered with more powerful features and functionality. Most people would not care about those things, but they would care about the reduced available memory, quicker drained batteries, the confusion of a file system, applications (not apps) with extensive menus and loads of unnecessary (to normal people) functionality....
Tablets were invented to simplify things, but laptops were not lost. Why can't people who need the full functionality of a computer just use computers designed for and vastly superior at that? Why ruin the tablet experience trying to make it be something it's not?