"Gordydog is my younger brother and we discuss this ad nausea. I am a tune-aholic. It is one of my greatest pleasures associated with trad archery and shooting.
All these tuning techniques mentioned, are tools that can help us to achieve perfect arrow flight. "Only accurate bows, are interesting" (Paraphrased quote by Townsend Whelen Re: rifles)
Specifically, if you have to raise, or lower your brace to enable a particular shaft to fly most efficiently through your bow...great! Be glad you've discovered a solution. As much as I have my bias, I'm not sure one size fits all, i.e. raising your brace weakens spine or vice versa, as evidenced from the small sample of experiences above.
I personally prefer a lower brace height for a myriad of reasons, so for me, this becomes one component, that I usually do not compromise on. There are still many tricks in the bag I can pull from, to arrive at pin-wheel arrow flight and "interesting accuracy".
Test, test and test, and then challenge what you think you've arrived at, and then prove it all over again.
Kris