Add the ability in outreach communications (texts and emails) to use a "fallback" of choice (via an added field in the settings for the individual communication) when there is no data in a contact field (eg. {{donor.first_name}}). Example, if I have a subject line "{{donor.first_name}}, we need your support!" and there is no first name for a contact, it currently shows up as " , we need your support!". With a fallback, it could be something like "Friend of <organization>..." or, "Dear donor..."