[BIP proposal] Pay to Schnorr Key Hash (P2SKH)

The discussion raises a significant concern regarding the engineering efforts required to compromise the privacy benefits associated with Taproot, an advancement many in the community have advocated for. The sender argues that these efforts are not justified, especially when considering the alternatives available for optimizing transaction costs. Specifically, the sender points out the potential of focusing on CISA as a more beneficial approach to saving resources, noting that it holds greater promise than merely saving 12 bytes per key. Moreover, it's highlighted that the inclusion of just two inputs in a transaction can lead to a saving of 64 bytes, indicating a more efficient method of optimization without undermining privacy. This exchange underscores a critical analysis within the Bitcoin development community about the trade-offs between enhancing privacy and optimizing transaction costs, advocating for a prioritization of strategies that do not compromise on privacy benefits.