They'd send in P.R. people to make sweet movies about them. What we need is a list of all the Alien-friendly films ever made. Brother from Another Planet, That Michael Rennie flick from the 50's. Now, we go find the writers. Ask your pals what they think.
Many theories are out there.
They want to marry us, raise kids. Their huge, mother ships left years ago, they're all ET's who can't phone home.