I'm still on my first playthru (going for Quinn) and honestly, if it's a story about how your choices change people's life for the better, I would love it. I love the idea of helping people's lives irl and in-game would be appealing too. I also found them diverse and somewhat realistic (with a healthy point of fiction to make it enjoyable) and I loved all of them (some more than others, but they're all good).
I think their characters are fun and interesting, and I love the game so far.