I’m sorry but seriously – Just put a detachable keyboard on it and face the fact that you’ve got a laptop there – not an iOS device. I’ll even overlook the fact that Microsoft’s already done it – the detachable keyboard – and trust that Apple will get it right. What’s the point? With the work that’s undoubtely going to get done on such a device, a keyboard is only inevitable. Make a MBP and add touch screen, and you’ve got a complete – um, portable computer. The iPad Pro is going to be a laptop with touch screen + keyboard – simple as that.