Along this same train of thought, but circling back to the need for errata in the first place, I think there is often ways to tweak the environment by releasing new cards as opposed to obsessing over the old. My personal belief is that much of the angst over imbalance is reactionary: “such and such card/deck is messing with my two-month-long tournament scene!” Do we even know how Mugging would have affected Paralysis Mark as written? How would Hot Lead Flyin’ have changed over time, given the chance? I’m no rules guru, but I am a practitioner of patience. Especially considering practical delays: from design to playtest, back to design, to print, to community (who will break every environment anyway).
Rather than errata bad cards into good (or broken cards into mediocre) maybe newly printed cards can make formerly bad cards better (and broken cards reasonable)! In my mind, that’s the best of both worlds.
Obviously there is a ceiling. This is when new arcs allow for reboots.