It would be cool if the rope bridge was a bit longer - maybe 50 feet or so. Other than that, I like these, they're nicer than boring tan battle mats. I swear, whenever I see the color beige I reach for a d20...
I put my map packs in a heavy duty ziplock bag, and that seems to work fine for storage. You might also find a plastic pencil case that would hold them and protect them a bit more.
I was thinking that you could lay some of these on top of the back side of a flip mat to get a larger playing area
