I searched for anything about shield costumes, and the only post I could find is one from way back in December. I really don't like the look of the Owlite Shield all that much, so being able to use a shield costume, or even an option to toggle the display of the shield off/on would be highly desirable.

I also think it would be interesting to have costume items that offer no defensive power and exist merely for the sake of altering your appearance. Having to spend a ton of crowns or use up rare crafting items for costume items isn't necessarily ideal, so having this as an alternative might be nice.