pirate - we know we can see our various drives in the Places bar on Dolphin. However, take a look at one of your filesystems in that bar ("jim1", for example). Hover your mouse over the icon; right click on the icon. Does it tell you what kind of drive it is? Its capacity? How much space there is left on it? What the permissions are? The device node?
In the Storage Media section of My Computer on KDE 3.5 you could get all of this info in a second. For those of us who have to work with lots of drives (internal, usb ...) it is incredibly useful.
These changes are out of our hands and in those of the KDE team, I guess, so I suppose there is not much more to discuss, really! Except, perhaps we can follow the KDE forum and politely express our views there.