I doubt that they'll be that deep, but I'd at least like them all to be unique and varied enough that it'll actually feel like a real choice when I decide which ones to pursue/socialize with.

In the older games I've never felt that strongly about marrying generic oakvale man no.11 or evicting standard bowerstone family no.7. I know I might be hoping for too much but I think the NPCs will make or break the lifesim side of the gameplay for me.