I'm probably in the minority, but I was never a fan of the all in one keyboard (even when I had an A500 - I hacked it into a desktop case). Function, then form. Especially nowadays with the plethora of devices available. Keyboard broke? I'd rather buy a new usb one that I like and plug it in rather than hack apart a case (that is of course if you're using a standard keyboard). Why lock the user into a touchpad or mouse if they prefer say.... a thumb driven trackball? When I want to expand the system, my first thought shouldn't be 'how can I hack this into the case' or 'do I have clearance?'.
In this regard, 'the box' has a superior function. Although there are some ugly ugly boxes out there, there are some pretty nice designs out there as well.
Let the form follow the function.