That all reminded me Zatoichi, a blind swordsman from the Japanese movie of the same name that I watched when I was younger.
Since then, I always wanted to play as blind swordsman in a game.
So what I would like to suggest is that there is ether option in character creation where you can set yourself to be 'blind' (it would only be cosmetic) and could choose from 3 kind of 'blindness'.
One would make your eyes white, one would make your character constantly keep your eyes closed and one would give you a blindfold over your eyes (would be nice it could be colored in color we want).
I repeat, those above would be purely cosmetic changes on your character and would have no actual effect on gameplay and you would actually see normally.
Also, there could be an unique item (Zatoichi's Blindfold?) instead that will turn us into a 'blind guy' who uses his other senses to navigate around by giving us bonuses that will create an illusion of that.
Item would be a simple blindfold and it would be a cloth helm.
Bonuses from it would be that you have constant night-eye and detect life in 300ft.
Those two effect combined would make it seem as if you were blind, but use other senses to navigate around.
And yeah, none of these should actually make you blind, remove your eyesight and try to make you play using only sound or anything like that.
First suggestion is only cosmetic change just like your hair color or nose shape.
Other is just an item that will give you constant night-eye and detect life in 300ft and that's that.
The idea is that it tries to make you look blind and not actually become blind.
It's for RP reasons since I doubt that I'm only Zatoichi or Daredevil fan.
Also, I think that there cold be a nice sum of people who would like to RP as blind moth priest so there is an actual reason why this would be good idea.
Anyway, your thoughts on this please.