My sweet friend R' S.R. sent me the following response to a recent post:
Heard b'shem the Iyun Tefilla (have not seen it inside) that Chazal use the term Zachur Latov to refer to people whom are very distinguished in working for the klal! Eliyahu Malach Habris, all his accomplishments in Sefer Melachim, proclaiming Moshiach Bimhera Biyameinu etc.