The screen's a little small, but in keeping the overall proportions in line with the original Nano, Apple ensures that existing accessories will fit the new model. We bet third-party vendors are breathing a collective sigh of relief.
The 2G and original Nanos are very similar; their competitors, however, couldn't be more different. They offer squatter designs and a boatload more features, such as built-in FM radios and video support.
Apple cut down the packaging in the 2G Nano so that it's even more earth-friendly than its predecessor. The plastic box is sturdy enough to act as a storage receptacle for the player, or you can just recycle it.