Once classic designs can be “printed” reliably, next will be making one-off & limited runs of exotic designs, going straight from designer to finished product without fiddling with CNC & normal milling issues. Example exotic: http://www.pascaleggert.de/ThorA1.html
Kinda like publishing going from movable type to laser printers. First, the latter has to catch up to the former, then far surpasses it in capability.
Wow, that is wild! That bit of artwork deserves its own thread.