I just started laddering with this BP team, and I stand by my thoughts that Deoscreens are the actual broken element here. I doubt this team could function if it didn't basically have almost guaranteed 5-7 turns of increased physical or special bulk for Scolipede or Espeon to abuse. To me, Deo-S is just as mindless, automatic, and reliable a screen setter as Deo-D is a hazards setter. I'm not sure why it took so long for an HO team (because BP is basically a form of HO, I don't think there's any denying that at this point) to abuse DeoScreens well enough to break the metagame, but it's happened. Sure, we can and probably should ban BP or limit it to one user and that will fix this team, but I have no doubt that someone will find another broken team that is also broken specifically because of DeoScreens, so we need to tackle that as soon as possible. If there's any conclusive evidence that Deo-S is banworthy, than this is it right here.
Though, to be fair, someone actually pointed out that banning Deo-S will just cause this team to run Azelf, but eh, we'll deal with that when we get to it. Just get Deo-S out of OU.