Spot on, yes. The main point I would emphasize is that, just as the “Gina Vendetta” story is essentially the backbone of the main story (although entirely optional whether to pursue it or not), the stories for the Veteran Nurse and Veteran Soldier are similarly unique / specific to those two backgrounds, involving such as characters from their past. It’s not something that will ever be seen except by playing those particular roles, i.e. not something that would just be ‘switched on’ for other backgrounds in a future DLC.
By the same token, when the College Graduate becomes a Primary background, his or her stories throughout will be similarly unique and not something seen playing any other role. That is the essential nature of the ‘Primary Backgrounds’ concept – actual new content with each update, but woven throughout the main story.
On a side note, I should add that one useful thing the Primary stories offer (from a game mechanics point of view) is more opportunity to address that character’s main weaknesses. Our humble foot soldier might not start out as the smartest or most experienced Leader, for instance, but it’s now more possible to purposely develop the character in that direction simply from the opportunities presented – should you choose.
It stands a good chance, if past popularity is anything to go by… From my (neutral, honest!) point of view, it would be great if the second was completely different to the Veteran Soldier, so College Graduate would be a good fit. Then again, two or three others would be, too.
As sorely tempted as I am, I think I’ll have to resist the temptation! I have a few interesting (well, to me) concepts in mind, one or two of which haven’t been done around here before and would, I believe, make really good choice games. They’re a little less… ambitious than Vendetta, but that’s probably for the best.