We could use the smart connector of the iPad Pro to connect to the base of the MacBook. When connected, we use the processor and drives of the MacBook and the touch screen and touch ID of the iPad Pro. Once you remove the iPad Pro from the Mac base it is your standard iPad Pro with all your data already synced via the smart connector. All other work is updated via iCloud until the two are joined again and syncing real time. This would give a MacBook with @ 13" retina display that is powerful when needed and ultra portable when on the go. The display portion would be powered by the iPad internal battery to give the Mac base longer life. Once the Mac power supply was connected it would power and charge both units. Just an idea.