I wonder just how much of an influence the Enclave had on the Brotherhood of Steel. To be honest, I've had this thought for a while, just bouncing around my head like an old Windows screensaver. I can't help but think that the Enclave had some impact on how the Arthur Maxson era Brotherhood turned out by the time they reached the Commonwealth.
The Brotherhood's sudden emphasis on all things non-human (super mutants, synths, ghouls, feral and otherwise) being some kind of blight on the planet is a little too reminiscent of the Enclave's history of attempted "mutant" genocide. (To the Enclave, even regular humans were counted as "mutants" if they'd been living in the wastes. They only viewed themselves as truly and "purely" human.)
I dunno, does this make any sense to anyone else?