Some people might want to swap cards between devices but I feel that is pretty ancient procedure... once I stick a card in my phone or tablet is pretty much stays there.

A camera is a bit different animal, I have several cards of course that I rotate; when one is full and I have no chance to empty it to my laptop I'll just put it in my pocket and stick in another.
On the evening I will then transfer the goodies to my computer via USB cable, not by putting the card into the computer which has no slot for it anyway

So, what I'd like to see is ability for the tablet to replace my laptop in this scenario; to act as USB master host so I can connect my camera to it, I have no need to swap cards between the devices.