I just watched someone else play the game who made, in general, a lot of shitty choices (most of they're decisions in Shel's story was based on trying to "romance" Stephanie). Apparently, killing Danny instead of Justin gets Vince to go with Tavia, and saying "You might find people you know" at the end will get Russell to go too. These seem like super trivial things to me. I can see why saying that might get Russell to go since his motivation is to find his family, but Vince's decision seems completely arbitrary given that he says that Justin ditched him to try and find other people. This kind of stuff just irks me.
I still had fun with it though.