There's zero reason to nerf Outbreak Perfected in PvP since a Bygones with Kill Clip is better. Even a Nightshade or Chattering Bone with Kill Clip are better. Outbreak Perfected is only gonna get really crazy with the catalyst since enemies killed by nanites will spawn more nanites and it may be like how Sunshot's explosions cause other enemies to explode. If it chains like that, then it's gonna get ridiculous.