If there is one thing i'd like to see for the PlayStation (And maybe other consoles too) is a memory card which has a Memory Stick Duo slot in it.
It's so simple and ingenious, I am very surprised Sony, or even one of the third parties haven't yet thought of it!
It would mean mass storage of game saves, as well as the feature to upload them online and share with the world, to be downloaded again and used by someone the other side of the globe...
Come on Sony - Give us what we want!!! After all, you are the kings of connectability! (Can't I even connect an Aibo to my PS2?)
Even if a third party developed a USB Memory Stick Duo device, then that is something.