The amount of cables, power supplies and other requirements dooms this thing from the start.
It's a good thing then that the target audience isn't stumped by such things. Sometimes I have to wonder at the pitiful levels of competence that people place on others. Sure, elderly individuals may have some trouble, but we're talking about cables that can only go in one way, are color-coded, and there is even a manual.
The only requirements in my opinion that impede mass adoption are the PC requirements, the price, and the available space. Two of which will naturally go down, and the other is up to availability, but isn't required, and can scale down very well.