Tell me this, What is the down side of having your axle properly set up?
You are right, there is nothing wrong about having your axle setup properly, but usally this kind of thing is reserved for those that exhausted all other options, such as dual cased and high pinion. Rotating the knuckles may bite him in the butt down the road if he gets either DualCases or a HP. He may endup being faced with having to purchase a new housing because of this kind of mod. I think thats all anyone was trying to say.
The folks that tell you it is stupid don't have any clue what they are talking about..
Like I said, no one here is stupid about this, just making sure all the P's and Q's are mined before he dives into it. Making smart desicions about big projects like this are very important and shouldn't be made on a whim.