Just imagine.... if in every TMA and airway over Europe, when climbing and descending aircraft were likely to get within 1000 ft, they built in an extra 1000 ft.... That would be like saying the standard vertical separation will now be 2000 ft.. And how about the cases when two aircraft get less than the required distance apart horizoantally? Let's make 5nm become 10nm and 3nm become 6nm.. Really, that's what it comes down to - total nonsense!!