User blog comment:Matarrok/Too many gas or airbased devil fruits?/@comment-2031609-20111023070518/@comment-3387274-20111023125259

Actually, Galcion, the fire ones were a bad example. Those are actually different. But the problem is indeed the lack of solid rules about how similar is too similar. I can't think of any way of tying it down in words either, so right now wether or not a DF is acceptible depends on which member of the comitee finds it first. We should ask people to check the devil fruit shop before they create a fruit as well.