There are dialogue options in most of your conversations, so you can roleplay in your chats with the modded characters. The voice acting is great, from the stranger to old coot Paul (my first modded settler) to the other arrivals, which even include an Assaultron robot who is haunted by the memories of all the people it killed. These new developments are, wonderfully, all part of the Sim Settlements 2 mod, which doesn't just give you some settlement building and management tools but a hell of a lot of story, quests, new characters, and surprises. Without saying too much, I'll just inform you the negotiations were short and a bunch of my settlers got shot in the head. The raiders are angry because I'd killed a bunch of them in Concord a few days ago, but I figure I can talk my way out a bloodbath because there are some dialogue options for negotiation. I dash off to deal with the hostage situation, and find the pack of raiders in the woods pointing guns at some of my settlers. I already know raiders sometimes attack settlements, but along with learning that Paul can decide to leave the settlement on his own, that raiders can actually abduct people is more new information.
He has news, too-raiders have taken some of my Sanctuary settlers hostage. It's surprising, because it means he left my settlement, something that sets him apart from every other settler I've ever met.