On the practical impacts, unlike the statutory interpretation, I don't think I'm in a position to give you evidence about what would be preferable.
It seems like it's either one of two, either you want them so different that they are easy to tell apart, or so similar that it makes no difference if you tell them apart because they're the same. As it is now, it appears to do neither. I'm sure others can offer testimony with much more expertise and insight on it than I can for those international issues.