And how many of the airproxes involved IFR inbounds declaring a visual? I suspect the reason they all fly the procedure now is because with increasing traffic levels and no radar the controllers can't be sure where conflicting traffic is. I've had one unnerving experience of flying a VFR transit across Inverness when an Easyjet was cleared for a visual, apparently descending through a hole in the cloud below which I was flying. The only thing giving accurate information on our proximity in that situation was the 737's TCAS. Not nice!
As for "Most of the military will be low level" that's precisely the problem - not speaking to anyone, VFR, autonomous, very fast, and likely to change heading/altitude at the drop of a hat. Not quite so much of a problem now than when Inverness had lots of SH360s, but ask Doncaster or Prestwick or Norwich controllers what it's like maintaining separation on FJs crossing the final approach path.
NS