CreateInputs::created_address will eventually be called by revm. When there are inspectors however one might call this function before it's passed to revm, and revm will call it again thus re-computing 1/2 keccaks (1 for CREATE; 1 bytecode hash + 1 for CREATE2).
We could try making fields private in CreateInputs and having an internal cache for the result of this function.

Here are few uses (foundry, revm-inspectors compute this in the inspector fn create):