It should not be explicitly attached to appearance. I would not be opposed to a cursed item that drops Charisma to 3 and makes the player turn into a fuggly zombie though. Or a magic mirror that raises Charisma to 21 and just leaves all the NPCs you meet dumbstruck with awe at your magnetic features in convo. But I'd like to have as many options and as much flexibility as possible to alter cosmetic stuff at will. Not being able to alter appearance after char creation is wildly annoying for 2021