Because I cannot put 10 arrows in a 2 inch group at 20 yards, they don't seem to be an advantage to ME. On the whole, What Pat said is I believe is true. All things considered, a flatter shooting arrow "is a good thing". I tapper all my shafts, making the last 9 inch's of the nock end a slight tapper, usually 23/64 or 11/32 down to 5/16 dia. I would say try it on some matched shafts. If you shoot a better group, go for it. I will post a photo of my reworked tapper jig in "Arrows" and "Anything else" sections today or at least by tomorrow.
Dick