[jeremya]

I think this feature lends itself well to tight feedback loops, as you said. However, after I crossed the painful divide from CloudFormation novice to... well, whatever is after that, CloudFormation rollbacks became a friend instead of an enemy. The ability to return to the last known good checkpoint is a powerful feature that is extremely useful in production systems and the pipelines that deploy them. In those scenarios, you're not experimenting and learning, but enhancing and evolving existing infrastructure.