Ever play FFXI? They had no problem treating you like a noob when you changed nations, or started a new mission line, or really any time at all. Pretty much the only NPCs you weren't a fledgling adventurer to were the ones you had proven yourself to through the story.
That said, the intros are as much about the NPC characters as they are about you. Those NPCs will undoubtedly appear as major story characters, and it'd be pretty odd if they expected players to create new characters just to see those scenes-- scenes that will almost definitely be relevant later in the story.
But if nothing else, I'd like to know if and how you can start the equivalent intro quests (e.g. Treasures of the Main) from nations other than your starting one.
Ok, now we're going to get slash fiction of Wint x Kachi somehere... rule 34 and all...
Never confuse your inference as the listener for an implication of the speaker.
Good games are subjective like good food is subjective. You're not going to seriously tell me that there's not a psychological basis for why pizza is great and lutefisk is revolting. The thing about subjectivity is that, as subjects go, humans actually have a great deal in common.