The fundamental problem with previous AA attempts is the account model! Coupling account execution, authentication and authority in one place means that the protocol loses visibility, dependencies must be discovered (via simulation/tracing), layers of mitigations are added. 8141 enshrines that. The original account model that ethereum shipped with was a decoupled one! The authority was protocol managed and a single intrinsic mapping of secp256k1 to an account. 7702 let accounts set their execution code, which was a good addition. Execution code in one place (wallet bytecode), authentication in another (secp256k1), authority in another (protocol managed mapping). 8130 just generalizes this mapping system so that its updatable to any contract defined authentication scheme and no longer singular. Because the model stays decoupled, the transaction type can be declarative. Dependencies can be recognized in the transaction itself. Mitigations fall away. Customizations can be added on cleanly. Every chain can build what it needs. 8130 enshrines exactly one thing, the authority mapping system, and all of AA falls out.