This differentiation stems from the need to maintain compatibility and optimize transaction efficiency without compromising the structural integrity of current blockchain protocols. The potential adaptation of bech32m as the address format for this new script type is mentioned, signifying a continuity in addressing schemes despite the underlying technical evolution.

Exploring a constrained version of CISA that mandates the utilization of a taproot script path while simplifying the signature requirement to one per revealed path presents an interesting compromise. This approach, though innovative, offers diminished savings in transaction space—reducing from 64 bytes to approximately 29 bytes per input. Such a marginal efficiency gain raises questions about the practical value of this limited application of CISA, especially when considering the broader objectives of blockchain scalability and cost reduction.

Furthermore, the concept of applying hardforking CISA to legacy scriptPubKey formats, such as p2pkh, introduces a compelling argument for its broader utility. Specifically, it may facilitate more economical transactions by lowering the costs associated with cleaning up outdated and less efficient utxos. This perspective underscores a strategic consideration for blockchain development, focusing on backward compatibility and the financial implications of protocol enhancements.