I deal a lot with physician offices, hospitals and healthcare delivery systems in general. As a professional courtesy, on all my merged correspondence, I prefer to address certain levels of contacts; i.e.: CEOs, CFOs, Drs, etc) with salutations using prefix and last name, whereas most of their subordinates with contact prefixes of Mr. or Ms., I use a first name only salutation.
Having an option, especially when importing large numbers of new contacts, in which I can choose which salutation format I'd like to use based upon their contact prefix would be a huge time saver. Needless to say, post import editing and testing would/could be completely eliminated, knowing that the correct salutation is assigned to the contacts upfront.