We need NXT to match guests who are already on their Hosts RE Relationship Record to that relationship. For example if someone register's for an event and their guest is their spouse, if their spouse is listed correctly on the hosts relationship tile RE does not match the guest to this relationship. This means we do not have the guests title and when you click the spouses name on the relationship it does not show that they have attended the event. This is causing a lot of issues and needs fixing, it seems odd that RE will not check the relationship for the guests name, but knows the relationship is there as if you search on the spouses name the record of the host is located.
I agree we need both of the comments below added as well!
Spouse records should be able to be matched for events and a nametag selected from a custom addressee/salutation.
Expanding the functionality of Constituent Matching for Participants, to consider non-constituent relationship records (or perhaps allow the option for relationship/nonconstituent matching for Participants) could be beneficial toward a more ideal design here.