The administration of this new process is a job, created by the previous government as part of a red tape, personel tracking system and would save money in the DVLA department, as the department administering this could be reduced in size.
Why have the driving licence photo renewed every 10 years? Do people really change that much in 10 years? I think not! This could be extended to every 20 years or preferably abolished all together, with the exception of a new licence at retirement / 70 or whichever was deemed most appropriate.