[cubicle67]

I'd love to be able to expand my wifes iPad, but I think Apple don't offer it (the ability to expand the capacity) for two reasons, the first of which is price - the retail difference between 16Gb and 128Gb is almost pure profit.

The second resaon though, is that it introduces a level of complexity Apple are unlikely to be comfortable with[1]. Users now have to be aware of where stuff is being saved (flash or sd card), and the OS UI needs to be updated to provide this option.

[1] unfortunately, iCloud seems to wildly disprove my point ...