I'm wary of the idea of a complex ban of Smeargle + BP. It just flies in the face of established smogon policy and I don't see how it's different than, as was proposed and subsequently shot down in the first ORAS OU suspect, a Greninja + Protean ban. It's removing an element of a broken Pokemon for no other reason than to let it be legal for its own sake.
I guess in this case it is entirely clear that the broken element of Smeargle is BP, as opposed to Greninja where it wasn't broken until it got enhanced coverage from ORAS, but I'm still hesitant about the precedent this would set. Yeah I know "slippery slope," but this isn't as drastic a case as the Aldaron proposal... I would appreciate some thoughts from council members on the precedent side of things.