We were having this conversation when I joined the RAF in 1982 and it was still going on when I left some 26 years later.
The problem as I see it still revolves around the officer cadre. Whether you try to talk it up or not, the flt ops officer job is something that any old average GD officer picked-up quite quickly. In my time I saw aircrew, ATC, FC, Int and even Regt officers fill these roles with relative ease. That's not me belittling the non-commissioned opsie role, I'm just saying that the need for an overarching officer specialisation is tenuous. So this leaves TG9/12 'opsies' in a slightly better position than firefighters in that they have far more uses than only fighting fires but there is little need for an overarching officer corps. Where the new TG sits is an academic exercise but I would offer that it should belong to an ABM type organisation.
Turning to the ATC bashing, again this one has been around the buoy quite a few times. At the end of the day it comes down to costs and civilian controllers, for whatever reason, are too expensive.
All that said, I haven't a clue what the inevitable massive spending cuts will bring in the next couple of years. I do know that it will be far uglier than any single event I saw in my quarter century where the RAF that reduced in strength by almost 70%. Personally, I would get rid of all this ATC/FC/Ops bullsh1t and concentrate on saving an air force.