I fail to see exactly what relevant tools he brings to the job apart from honesty, candour, and superlative flying talent and experience.
Well, they're a bloody good start!
Mark Skidmore is a good bloke, has business experience, has been successful at the top levels of the military organisation (which is at least as much civilian as it is uniform), owns and flies his own GA machine, is old enough to be wise and young enough to have drive, and is a positive personality.
I'm sure he'll be as well placed as anybody, and better than most, to do what is humanly possible to improve CASA where it needs improvement (clearly, a big task) and to build on the (gasp) positive things it already does.
The whole RAAFie vs civilian thing is a smokescreen, and I'm sure we all know numerous examples of people from both sides of the fence who are a) goats, b) champions, or c) somewhere in between, ie typical human beings.
Skidmore will do as good a job as can be done, and I hope everyone gets behind him.