To take a stupid analogy, if you have a hammer, you will find plenty of things that look like nails. If you bolt a hammer on the side of the device, you would get frustrated if there wouldn't be nails to hit. Then again, I'm arguing here in generalities. The N810 has no D-pad on the front cover. Any future device might or might not have such a key. For instance the Palm Pre skips the D-pad with a separate touch scrolling and gesture area, giving capabilities like page up/down, launching new items etc. All very nice. The touch pad a nice idea because if there is nothing else for it to do, it does (afaik) exactly the same thing as another parts of the touch screen. Meaning that there are no extra functions the designers have to invent just for functions sake.