With regard to the manufacturer making a mod or having it imposed on them this industry surely does not have a glorious history of doing this, indeed it has in the past given us reason to believe it does all it can to avoid such a solution.
Just look how long it took the well documented and repeatedly reported pitot head problems. It required a three figure body count to prompt action on that one, it's an aspect of our manufacturers and regulators that gives us nothing to be proud of.