[joedoe55555]

Agree, fixing bad data structures is much more painful than fixing bad code. The reason is that the deployment of the refactoring has the complexity of a new deployment, or even higher.

However, given that at large organizations updates and deployments can easily become political issues, it's a good habit to deploy often. That makes your life easier when trying to deploy new changes because those who are watching or performing the deployments get used to it - and the errors occuring during such deployments.