For real. I mean, I don't care for Xion or RAX as a trio, so I can't say if it's already my perception of them playing a part, but the sigil spiel seemed so nonsensical. I'm still wondering what was the point.
Spoiler ShowIf I had to guess, the whole emphasis on the sigil was so that Roxas, Axel, Xion could have an in lore reason to keep their nobody names. Lea is the only one who could lose it and not have it be something silly. No. i is not really a good name for a character (except for maybe a robot) and we can't have 2 Soras running around, this game is already confusing enough!