I feel some of the negative comments miss the point, at least of a way of structuring reporting extracts and presenting them in an easy to maintain way for serv

I feel some of the negative comments miss the point, at least of a way of structuring reporting extracts and presenting them in an easy to maintain way for services: you are signing a contract with the data team and taking on their concerns with an approach like this. Your unit tests fail if you are about to break the contract with a change, and you discover it upfront, rather than after rolling out a new service that changes a definition unexpectedly.