People argue with immersion. But what immersion are you talking about, when you want to display-off what the world brings to life?

I know what you mean. But when you play the story, you see the NPCs. Even most of the dungeons you can run with NPCs. There is already no big need for other players.

And how it would be 'immersion' if all cities would be filled, for example, just with people in the same default glam-off looks. Does it feel like immersion, when most people look the same way? That's boring and kinda clone-like. (at least in my opinion).

You are right, that it does not effect the other players, when someone turns of the glam. But I think it's a loss. Because also very good and well designed glam combinations would be displayed-off, too.

Maybe it would be cool to have an extra roleplay server to travel to on every DC (a server without home world option). With some restrictions and options, and the option to turn off glam in general, or from specific people, like some kind of blacklist.

But I think, that a generell option to turn off glam wouldn't be so good. : )