Or in my case.. I just REALLY like the faster speed, better and louder speakers and display...If their goal is to sell computers that'd probably be the #1 best seller of all time. Maybe throw in the Pro speaker grills or a port on the other side for people that want their desk setup with cord on right. (or just an SD card reader please) Other than that the Air just seems like the perfect computer for 95% of people, and if these things keep getting more powerful and cooler it can continue to handle an even bigger chunk of professional tasks.
Only reason you'd go Pro at that point is for hours of gaming, 3D Blender type work, really big or long video work (8K RAW/1+ hour edits/etc) or if you just need to pump stuff out super fast in very little time like same day turn arounds.