I had been judging the new mac pro as an existing mac pro replacement, i.e. a stand alone workstation. On this basis the new design makes little sense - a small device requiring a mess of things to be plugged in such as monitors, keyboard, external hard drives, external optical drives, external sound cards and so on. But it struck me that it is actually designed to be a node in a processor array (i.e. a render farm). In that role it requires only a single TB cable, its small size and vertical cooling allows a high packing density (though no stacking) and it has been stripped of most if not all unneeded components. From Apple's point of view they want to sell to big customers, they want a flag ship product that is used to render block buster movies and so long as it can be used by itself they can call it a new mac pro. It is a bit like if Mercedes dropped their sports cars and concentrated on F1, but allowed customers to buy F1 cars which had been made road legal by the bolt-on addition of lights and number plates with a trailer option for those who wanted to carry luggage!