My thoughts, its a not a great idea.
It has some merits, but the thought processes about what they are trying to acheive are all wrong, and as such its going to cost ATC providers (certainly in the UK) a small fortune to implement. The same end result is acheivable without mass airspace change, and hence at a much lower cost. As usual though, those high up don't listen to anything from those who actually work aircraft, and who are best positioned to comment on such things.
It seems like they have seen a solution and are too blind to consider that there are much better ones out there.