Well, there's a lot that CAS can not change such as the big, late equipment programmes or dearth of funding so lets not pretend that he can move mountains during his 2-year tenure.
Apart from sacking the dweeb that bought the 'medium weight trouser' and replacing him with a chappy from the Bahrain soukh (who also does a nice line in polyester but at half the cost - and with complimentary coffee), I guess ACM Slappery would have to work out in simple terms exactly where he thought the RAF was going to be in 5-10 years time and then go and tell his 41k employees face-to-face (or as many of them as possible).
And please don't tell me to go and read the copious quantities of stuff that has already been written; there are so many initiatives, changes and visions floating around that nobody seems to have a simple unified view of our destiny.
SS