One-Shot Replace-by-Fee-Rate

Currently Bitcoin Core implements a Replace-by-Fee (RBF) policy, where transactions are not replaced unless the new transaction pays at least a higher total fee than the replaced transaction, regardless of fee-rate. When RBF was first implemented over 8 years ago this was a reasonable, conservative, default. However, since then we’ve found that strictly requiring a higher absolute fee creates the potential for transaction pinning attacks in contracting protocols such as Lightning; replacing transactions based on fee-rate would make it possible1 to eliminate these attacks by eliminating BIP-1

https://petertodd.org/2024/one-shot-replace-by-fee-rate