Quote Originally Posted by Kohl View Post
(I don't even understand hooded items taking the helm slot... and why do hoods in general not "visor" to be on or off your head? How many coats/robes with hoods permanently on or off are we going to get?)
Hoods overwrite the helm slot to prevent weird clipping issues if you wore both at once - although generally it seems to be a holdover from ARR and I don't think they've done it for any newer gear. Hoods tend to come as separate headgear pieces now, even if they're visually attached to the coat if worn as a set.

As for using /visor on hoods... I think the simple answer is that it does nothing for hoods attached to the body gear because its function is to alter the appearance of headgear, and it can't do anything about body gear.

(Though a visor-equivalent for body gear that changes one element of the outfit would have fantastic potential.)