I have to ask. Back in the Aegislash days, it was becoming pretty clear that a) Aegis was great and had a lot of fans and b) the meta was being defined by it, particularly where Psychics are concerned. And since it's been booted up, the meta did change significantly, and I think for the better - more stuff is viable. Even Mandibuzz stayed useful.
So my question - hypothetically, because this shouldn't be a huge discussion on forcing a suspect test; if Greninja was suspected, what would be the obvious things to rise and fall? I can't think of much stuff that is nonviable (e.g. Aegis-era Starmie) specifically because of Greninja :/ and Azumarill would probably be better.