No idea, I’m not saying that there is anything out there that relies on the specifications. What I am saying is that there could be something out there that relies on the specifications, and changing it could impact them.
If you want a hypothetical: validator key holder runs a validating service on the basis that they charge 50% of the value of the validator over 32 ETH when the withdrawal happens. They can be sure they will be paid because they can withold the exit transaction until a payment agreement is in place (smart contract, escrow, direct payment, whatever).