[quote=@Oblivion666]
How are shinigami limited? No person is the same, unless you of course are twins. They yes you look the same. Only difference between Arrancar and shinigami, is that Arrancar can do ressurecions and ceros.
[/quote]

Human appearance vs non human appearance. Only shimigami of note thats NOT human is that fox guy, and tell me when he EVER gets any screentime? Meanwhile hollow/arrancars can be whatever they wanna be.