[quote=@PyroDash888]
Either that or there are certain, let's call it enchantments, that might make injuries permanent, or at least longer lasting than just taking a quick potion.

I don't know if I want to make it completely permanent, maybe just enough to leave a noticeable scar or something. But then a sub plot would vanish...

I mean, personally the thing I always found wanting about the anime was that duels with players were kinda meaningless, except for the killing part. But if players could injure other players, maybe even damage parts, not talking about legs, arms, hands, fingers or gauging out eyes and stuff, the threat of nasty players would be even more real, if you get my thought process here. I mean, I can of course just edit the post and make everything not happen at all, if you want, for authenticity's sake.
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The idea of "character modification" being an aggressive attribute is actually a fascinating one.  It is very non-canon but I'm not a GM and we've already dispensed with good parts of the canon so I really have no opinion on that, per-se.

Partial permanence could be good, like a notched ear making her look a little more rough around the edges.  But, there is one rule that usually applies to this kind of thing.  If something is a significant departure from the norm then it needs to be explained and its presence in the story needs to be justified so that it doesn't become a red herring.  Basically, why did Kayaba make an exception for you?  The answer could take a long time to find but the presence of the question would need to be acknowledged and clues or something "plotty" should be developed to take care of that later.

That kind of PvP behavior would motivate groups like World Walkers to start developing cosmetic mods to correct or compensate for disfigurement.  In the case of a notched ear, a kind of earring that decoratively filled the space or covered that part of the ear could be an option for later.  Who knows, they might even have stat or ability boosts on them but have a disfiguring injury as a prerequisite for equipping them.  There's lots of room for additional drama there.  After all, let's face it, the series had numerous time-skips and only minimal descriptions of what happened during those intervening periods.  We don't have an episode limit or a deadline to worry about and a lot of writers willing to play through almost every moment, by comparison anyway.  That means we need content and complexity to fill the intervening hours with something other than grinding.