With Rose Quartz being in the game, would the option for a species change to Gem be on the table, like how (if I understand right!) canon/fitting of canon Quirks or Stands are an option, and not just the ones that the JJBA and MHA characters in-game have? Or would each Gem be considered its own species, and so only Rose's Gem type is an option?

Or, let me know if I should actually direct this to Rose's player as a judgement call due to her canon familiarity!