Layer2 networks were never meant to be mere throughput boosters; their real value is to act as experimental sandboxes where bold ideas can be battle-tested without endangering Ethereum main-net. Arbitrum tinkers with DAO governance, Optimism pilots RetroPGF public-goods funding, Base experiments with CEX integration, and ZKSync pushes account-abstraction forward. Each of these initiatives would be far too risky to deploy directly on L1, yet on a Layer2 they enjoy a controlled arena for trial ...