We've thought about a client-side tool to diff desired from most-recently-observed actual state, similar to tf plan. Nothing built yet though.
FWIW though we never automatically delete-and-recreate in Terraform fashion. Our thinking is that once Kubernetes supports it (or once we build an admission control webhook for it) we'd like to explicitly mark immutable fields as such, which would require you to explicitly delete-then-recreate. Little bit less declarative at the expense of being a lot less surprising given the constantly reconciling nature of our system.
FWIW though we never automatically delete-and-recreate in Terraform fashion. Our thinking is that once Kubernetes supports it (or once we build an admission control webhook for it) we'd like to explicitly mark immutable fields as such, which would require you to explicitly delete-then-recreate. Little bit less declarative at the expense of being a lot less surprising given the constantly reconciling nature of our system.