Reminds me of the time when [cad]purify[/card] was released and priest was the worst class in the meta and Ben Brode told us all that there is actually a mythical "univorn priest" that would do great in that current meta.
Unfortunately, unicorns do not exist. We never figured out any such priest, and Ben never told us. Because he didn't have any idea what it could be either.
It is in fact possible for the meta to be unbalanced.