Actually I never directly critique my F/O and how he talks on the radio. Rather, when someone else says "with you" I simply ask him, with a chuckle, if he ever thought how redundant and totally useless and stupid the phrase is. Usually they say something like - they never thought about it, but now that that you mention it, it IS stupid. I find if they had been saying it, they usually try to stop doing it having now realized how utterly dumb it is.
Now....as to things like "Have a nice day" --- another total waste of time. How mundane and insincere. As if...."I wasn't planning on having a nice day, but now that you mention it, I think I will." I especially like the guys who think they have to ask each and every controller they are "checking in with YOU (and not anyone else) ..how ya doing?" As if whatever the controller responds with...that is, IF he does.....means one iota to the pilot asking. It's like going into a store and the totally stranger clerk asks you "How are you?"...as if they really care...therefore I always thank them for asking and then go into a 30 second speil -- "my ingrown toenail got taken care of, the boil on my back got lanced yesterday and feels MUCH better now that it's almost all drained but I still have a little bandage for the last bit , the VD test results turned out negative, I finally got rid of that thing under my armpit....so I'm doing pretty well...thanks for asking!" Try it when walking in with your wife or girlfriend...she'll be impressed with you and not embarrased at all.