While i agree there are options to de-escalate, my worry is the first run. My money says, most folks fresh in con game aren't going to understand that suddenly guns are considerably more illegal then ever before, and will lack the contacts necessary to employ the de-escalation options. I mean burst weapon fire trigger the alarm code. In most con tables that's pretty much is first action to happen as much half the time. 2+1d6 is probably manageable. But GMs are gonna to have to thread that needle very carefully. The first time a party sees it, or include a more direct warning to characters. After the first time and players are warned it's on them. The other thing that i see as very likely pit fall is the Giri section. If the first offer is the best offer why do we run negotiation faces? Or is just also accepted that, this just not true? Its strikes me as slightly problematic, when your traditional face rolls up and lays the negotiate edge smack down, that unless they happen to pack pile of etiquette this is gonna go south. How is that intended to be handled?
I love melee build personally, and it makes me very happy to brush-up on the ol'Kendo school and get sword fighting on. But lets be real most characters are built guns, and a larg percentage of those are going to pack automatics. Even most melee primary character have guns secondary.