The thing they proposed in the blog was REALLY over the top. It sounded like something from Mass Effect or Dragon Age.

It would be nice to have more personal interaction with some of the more important NPCs (I wouldn't be on board for Nanamo, since she's a ruler and all) but I'd just prefer some sidequests that shed some more information on some of the backgrounds of each NPC. We already got a taste of this for Thancred in the last main story and we know a little bit about Minfilia already. The rest of the Scions' origins and such are relatively unknown.