Simple:
_
EDIT: No, I am not joking.
Pantastic idea. I love it.
But then Sienna’s actual 4th class would lose it’s unique character.
And Markus is no more than a mediocre cook at best.
Sienna cooks so horribly bad that upon further inspection the Bile Troll vomited
Go further. A mundane object skin for each character.
Pan skin for Kruber’s mace.
A wrench skin for Bardin’s hammer
A butter knife for Sienna’s dagger
And scissors for Kerilian’s dual daggers
Go all out with the scissors and give her some Kill la kill ones.
Also giant needle rapier skin.