So, I read another person irritated by the way that the town blacksmith refuses to give a discount to the world-saving heroes. And, you know, they're right. It's almost like game designers don't really know what it's like to be world-famous, or to have a writ of unlimited authority.
Take Commander Shepard. He or she has saved the galaxy twice, and was famous even before that. He's like the Beatles, if they always drove around in a technicolor van labeled "Beatles".
And yet you can just pop off to see the refugee camp? Hell, Jackie Chan once had to walk down the middle of a busy highway to get away from a crowd of fans, and he didn't even save the galaxy!
When you enter the station, there'd be a whole squad of riot cops there to escort you, and a concierge with no particular scruples to get you anything you need.
Shep: "I'd like to go see the refugee camp."
Conc: "... ha ha ha, let's just pretend you didn't say that."
Shep: "Well, at least I'll pop off to the zocalo for some shopping."
Conc: "Hmm, can't advise you do that, either. Listen, why don't you just tell me what you need and I'll fetch it for you."
Shep: "Nonsense, it's just right through this door..." [opens door]
Voices: "Is. that. Shepard?" "SHEPARD!" "AAAAH! IT'S SHEPARD!" "WE LOVE YOUUUUU!" "SIGN MY FACE!"
Shep: [closes door]
Shep: "I need a type four barrel extender and all the fish."
It'd actually be kind of interesting to play a game where you really are that famous. I can tell you one thing: you wouldn't be randomly walking up to people and chatting with them. Not without seeing the look of confused panic in their eyes, at least.