Would multiple players in a discussion/argument with an NPC all be affected by a raise that one player announces? Let's have an example:
PC1 and PC2 try to convince NPC1 to tell them more about the bruises his child has.
PC1 raises: "NPC1, please, if you want us to help your family, you have to tell us what happened!"
Then, every character affected by that raise would have to set dice. But who would be affected in this situation? My guess would be "only NPC1", but that would probably lead to the players having many, many dice and the NPC having no chance at all to win (in most cases at least). Alternatively, you could argue, that everything someone says in an argument affects all the people in that argument. How would you handle this situation? How can I give the NPC a fair chance to win the argument?