With Name Format Options, you are given the opportunity to
"List the following constituent first when building the joint name format":
-Primary constituent from household
What is missing from this feature (and I am proposing needs to be added) is an option of "As it appears on the constituent's selected name format" or something similar.
In most cases, we want the system to export the joint name addressee and salutation as they would appear when you looking at the name formats within a constituent's record. As of right now, there is no great way to do this if we want to use Name Format Options.