BTW, I've known figure skaters who use 3/4" - 1" ROH, perhaps because it creates less friction, giving a longer glide. So it isn't universal that figure skaters tend to use shorter ROH. Especially for School Figures. Possibly for Moves in the Field, though I'm not sure. (Some people advocate even longer ROH for School Figures.) For both of those skating disciplines, glide length is very important, AFAICT, because you are often expected to go fairly long distances off of a single push. (Also, if what I've seen is typical, the speeds over the ice in those disciplines is fairly slow, so maybe they don't need very sharp edges??) If Blackstone is right, and FBV really does create less friction, maybe it would be good for School Figures and Moves in the Field??
Kaitsu - once you fix the uneven FBV edges, hopefully you can find good figure skaters willing to try out your FBV sharpened blades. It would be interesting to know what they think. Ideally, you would want them to at least try to use objective measures - e.g., how long a glide they can create, how fast they can go, how fast they can accelerate, how much unintentionally sideways skid they have, how much they travel when they spin, how stable their jump landings are, etc. If you don't use objective measures, they might be inclined to believe they feel what they expect to feel.