Thread:User talk:CodeCat/Plurals (2)/reply (11)

That's different. Cases aren't inherently part of a noun, but part of that particular form. And we include that in the definition of the form, just like we do with genders. Nouns are different in that the gender usually doesn't change between forms. For some languages the gender does change in the plural (the Bantu languages are an example, but Italian has some too), and then we do (and should) indicate the gender of the plural separately.