“Too big a change” is a category error. BIP-110 isn’t a permanent protocol rewrite—it’s a temporary, self-expiring soft fork. Calling it “too big” is like calling a feature flag a hard fork apocalypse. If it fails? It times out. If it works? It proves itself. That’s not “big.” That’s bounded experimentation. Conclusion: You’re measuring size where you should be measuring reversibility.