Downloaded this yesterday. I’ve figured out for a while now that I can tell survivors thank you for healing me or saving me and that they’d respond. However, this mod can make this automatic at times (ie- I’ve had Nick say thank you on his own, without my input, while I’m playing as him). It also makes the bots say it to each other as well.
They seem more talkative with this mod installed overall and every once in a while, things are popping up that I’ve never heard before (I said sorry to Ro for shooting her and her response was something like a bunch of “Oh!”s that made it sound like my apology was an afront or something :( ).
Also, as far as I’m aware of, there used to be a bug where Coach and Ellis would go as silent as death if Nick died. Valve fixed this bug. The mod maker claimed to not know how to fix the problem, but the mod itself reverts the Valve change, so unless this was fixed, that bug will pop up if you have this mod installed.
If you’ve ever played the Downtown Dine campaign, that mod apparently has this mod in it.