You are correct that straight forward disclosure could be very damaging. Say, if the saucers just showed up, people may panic. How about preparing people via art? It is already happening in many ways, but again, you are not as active as MIC. There is a MIC-guided campaign to present you evil and to instill in people the fear and desire to fight you.
How about competing with MIC on this very field - in art?
I am pretty sure: the images of aliens in our movies are not coming from you. They are sought by the producers and designers and supplied in part by MIC. How about you started promoting your positive images through art?
MIC = military-industrial complex