Triple elite here and I get CIF fine through passenger missions and data runs albeit at a lower rate (1:4 ratio) than EFC's, MEF and Biotech conductors. Seems odd that G5 material/data have different drop rates. I don't think rarity should be based on rank rather it should be on the grade of engineer modification. G1 easy to obtain, G5 difficult to obtain. Being based on personal rank is unnecessary.