My point wasn't to try and compare/ contrast Fallout to linear games. My point is that people are often happy with pre-set characters, and being a newly promoted BoS Knight doesn't give any sort of background of the character aside from the fact that he has been in the BoS. Nothing is said for how long, how he got in, or why. He could have been the cowboy/ gunfighter, or maybe he was a drinker and found salvation in the BoS, or what have you. It DOES limit the backstory of the character a bit, and that is a major aspect of Fallout, but many people I have talked to have always asked, "why can't I be apart of the Brotherhood of Steel?" Well, this would give those players what they've wanted. I'm unaware of whether or not this group of people is a minority, and I'm not saying my idea is even good, or that yours is better, or that my idea can't be improved, but I don't believe that it would change character backstories that much, and even with a slightly pre-set backstory, it would still set-up for a potentially amazing game if executed correctly, which SHOULD be Bethesda's main priority. If New Vegas was utter trash, do you think that complete creation of character backstory would have saved it? Being a recent addition to the BoS is no different than the Courier recently becoming the Courier since they could both essentially have any backstory aside from their current title. There are also plenty of RPG's what are enjoyable that are completely linear (Final Fantasy, Lost Odyssey, The Legend of Dragoon, ect.). Although being a courier, a prisoner, or what have you is no vague than being a recent addition to the BoS, being a recent addition to the BoS is still relatively vague, and offers the same thing as a courier, a prisoners, ect. to nearly the same degree.
You're not understanding. With a title/history like The Courier had, the player had the chance to say anything about them on that, they wanted. the PC could be a simple man/woman who was just taking up the job of Courier, for some caps this one time, or could have done it all your life. They could have done it because they were apart of Caesar's Legion (as apparently a lot of Couriers are Frumentarii), or because they needed a way to get back home. There was absolutely no allegiance to any faction from the start as The Courier, it was up to the player himself/herself to make those allegiances, and play it out if they wanted, as if they were always apart of that faction (hence the Roll Playing aspect of RPG.) But being apart of the BoS or any faction/group, is like originating from a Vault. You can't be a wastelander who's traveled all around, you're always stuck with the history of being from a Vault no matter what. Even if you were just a new recruit, you'd have signed your allegiance to the BoS from the beginning, or be from the Vault every time. Maybe I don't want to have my allegiance be to the BoS right off the bat, or be apart of a Vault, or anyone else. If I want to help the BoS, and join them, I'll do like I did in New Vegas and help that way, but I don't want to have to start from the beginning as being aligned with any faction/group or people. If I want my character to have originated from a Vault, I'll RP that how I like, but I don't want the protagonist to outright be apart of those or any group.
And I agree, there are RPGs out there that are linear and fun, but Fallout should not be one of them, ever again, like Fallout 3 did, but Fallout New Vegas fixed hopefully. Fallout is about faction relations, choices for the player, and consequences for the player. Games like ME series, which are fun, aren't the same kind of RPG that Fallout should strive to be. They're linear, you have a set goal, while Fallout the end goal can be a multitude of different things, and can be different every time you play.