I would suggest asking who they want to kill, if you do not agree do not allow them to argue it, at the very least do not do it while listening to their point of view. You can take up those points in the day thread.
While there are some solid hints from the failed plan @Vanilla_Town proposed, I will still not be voting to kill anyone tonight.
And by the same logic, there's over a 50% chance of two towns being together a neighborhood and even if scum knows the target, you can randomize who shoots since roleblock targets a player not the whole neighborhood.
Off the top of my head, that doesn't sound bad. Even if scum knows the neighborhoods exactly, the roleblock only has a 50% chance of hitting the right person.