Default salutation issue when no prefix is entered

When a new patron/donor opens enters their information and doesn't include a prefix (Mr., Mrs. etc.), the salutation defaults to:

For an individual: Dear Tom Smith

For a couple with the same last name: Dear Tom and Debbie Smith

For a couple with different last names: Dear Smith and Jones

I pull large lists for fundraising campaigns and would never want any of these salutations in my letters. It seems the only solution is to manually fix each record, which is impractical not only because there are well over a thousand records like this, but also because it doesn't solve the issue at hand so it would require constant maintenance as new people sign up every day. But this leaves me with the problem of having to spend too much time fixing the salutations in every list I pull, and I can't guarantee that I'm going to catch everything in lists that can be as large as 8,000 entries.

Is there no way on the back end to adjust the defaults to, for example, Dear Tom and Dear Tom and Debbie (whether same or different last names)? Requiring a prefix in our sign-up isn't a viable option in today's day and age.

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