No offense, but that's a bad idea.

More drives = more that can go wrong

There's really no incentive for them to do this. They'd have to make the consoles bigger, which is a big no-no, and they'd definitely have to repair more consoles. Plus that's just more shit to raise the temperature on those little hot-boxes.

However, something you could attach to expand the disc capacity could work. Is it really that hard to swap out discs?