Do you find it useful / helpful for the engineering org to do this in a rigorous fashion? Seems like it could be misused very easily. Just curious.
I know that rigorous estimates are useful to convince management that spending money on reliability is a net-positive investment. For example, migrating these servers will cost $10,000 but they went down for 30 minutes yesterday and we lost $1M.
I do worry that they'll be used to publicly shame people when they make mistakes that bring down systems, but I'm confident that my management will be responsible and mature enough not to do that.