"Personally, I'm unconvinced the "location memorization" is of such great value we need to contort the rest of the interface in order to not throw it away." I

"Personally, I'm unconvinced the "location memorization" is of such great value we need to contort the rest of the interface in order to not throw it away." I might agree for general-purpose computing however professional operators with traditionally "workstation" tasks (CAD/CAM, video editing, forms processing, etc.) would strongly disagree. For these individuals, much time has been invested in the physical memorization of commands, allowing them to issue the commands as if they were any other trained function of the body (catching a ball, for example). Having to stop and think about operating the software causes a mental "page fault", removing their focus from the work and wasting time. I don't want to get off-topic, but many professionals have expressed dismay with the move from workstation computers to PC's for this reason.