Not that it counts....but my vote is to make everything:
Last Name, First Name, DOB.
Messages, imported items, schedule, results pending file, EVERYTHING.
It makes me crazy tryng to overlook the first initial when I am scanning through some list looking for a patient. I don't think any of us mentally search by the first name, we always search by the last name. I always thought this inconsistency of identifiers in AC was sort of flaky. I wish they would get organized. ( Can't you tell I am German?!)