I actually have a long coat in the works and it will be included in the Customization Update coming up on the 24th. I'll work on those other accessories to hopefully add them in the update as well!
Would you be okay with shaved hairstyles if it limited which "Hair Back" you could equip? The way I have it set up currently, is that all the "Bang Hair" are the same size so that they can seamlessly connect with the ponytails and long hair extensions. So if I changed up that "Bang Hair" base to have a different shape, there would be gaps where it normally would connect. So I could add in shaved styles, I would just have to limit which additional hair pieces you can mix and match with them.
Thank you so much!