That's exactly what I was thinking. SSDs have fairly large page sizes and erase block sizes, so you're often reading and writing a lot more than necessary, any

That's exactly what I was thinking. SSDs have fairly large page sizes and erase block sizes, so you're often reading and writing a lot more than necessary, anyway. A clever implementation might be able to take advantage of that to scatter the MAC throughout the drive without too much impact on performance or longevity.