Might be OK for gamers or casual users. But for those of us often doing actual work with our keyboards, arrow keys are pretty important. Sure, I can click and scroll with a mouse or touchpad, but moving cursors around (with or without CTRL/Shift) in text editors and other productivity apps is pretty crucial to my workflow.
Same for num pad. Once you master num pad, there is no going back for data entry and other similar work activities.
