What about our backs, bending down to tweak a floor unit!
Wouldn't it be cool if you could use a toaster or rack unit as a control interface for the floor unit? Through the ethernet\remote connector? That would be a seriously expensive control surface, but not if you already have one.
Perhaps the floor unit will be meant to be part of an overall ecosystem, with interaction with a current unit in clever innovative ways.
Oh, and I bet the floor unit is the reason that the editor has been delayed so long. The editor is required for a floor unit as nobody will want to bend down constantly to use the onboard UI. I bet they probably had the editor for the toaster\rack units completed months ago, but had to complete the floor unit integration before release.