Nimmer
How are you going to maintain the level of competency of ATCOS who will, apparently, not be getting much (if any) Radar Vectoring experience once Point Merge takes over the primary vectoring task?
I remember, a while ago, someone in NATS (I think) saying that the ATC task was getting far too complicated for humans to operate therefor a new computerised ATC system would have to be developed (to replace the ATCO).
BUT, that the new system would have to be simple enough for the human ATCO to step in if the computer broke down !
If the traffic situation is so complex that the ATCO has to be replaced by a computer, exactly how is the human going to be able to step in (at a moment's notice) in an emergency situation when the computer goes down (especially if the human has rarely been able to keep up his vectoring skills) ?