For this to really work, programmers would need to maintain a logbook.
Pilots keep meticulous logs of their time in flight and simulation, and count their time 'in type' - 2,000 hours of flying a 747 doesn't immediately qualify you for the A380.
The martial arts training programmes also require some logging (at least, my old Judo training did).
There also needs to be some mechanism to audit the logs - commercial pilots are regularly placed in simulators and tested. Martial artists have to be examined (or compete - which is a harsher judge) in order to level up.
So, for time-logging for developers, we'd need to be able to categorise our time (I have thousands of hours in PHP5, several hundred each in C++ and few others), and be regularly audited (as has been mentioned already, dragging and dropping form elements around in Qt Creator doesn't make you a C++ guru).
All this is a far too complicated for not much gain - so I side with everyone else that says that programmers should be rated on knowledge and achievements that they can point to.