I know I am being a little naive, but how does this fit in with the 'if it ain't broke, don't fix it' philosophy.
It is as Max Angle says, becoming increasingly difficult to keep up with all these meaningless 5 letter words, that can be thrown at you all over Europe, and often the 5 letters are not so obvious from the pronunciation.
It is easy on familiar routes which you fly day after day but when a strange one is thrown at you in the middle of Europe it is NOT easy. Just push waypoints on the panel to see just how many there are!!!
I know ATC are trying to be helpful in giving direct routes but it is not always that obvious, especially for our American and Far Eastern friends in unfamiliar territory!!