As far as the AHS changing things, when they stopped using SPIDER VARIENT back in the mid to late 90s and developed the UNUSAL FORM category they had to get the hybridize-rs permission to change them to a LARGE FLOWER or UNUSAL FORM. I am assuming that this would be the case here, I am not sure of this, just makes sense to me.
I agree about the % thing, it must do what you say it does most of the time. I think Lyle has the same thing as I do, just not as much of it. I think all round daylilies will do this once in a while but very few will do it consently
More later, the Georges are here so I need to entertain for a while..