I'm not sure that Gruber explicitly stated this, but it also seems clear to me that a key design element -- making the device small -- is also enabled by the la

I'm not sure that Gruber explicitly stated this, but it also seems clear to me that a key design element -- making the device small -- is also enabled by the lack of configurability. If there's no concern for assembling interchangeable parts, the parts can be integrated into a tighter enclosure.