The state I described above was somewhat solid by early 2017. Biggest possible issues were if you wanted to pass things like cloud credentials to your apps etc

The state I described above was somewhat solid by early 2017. Biggest possible issues were if you wanted to pass things like cloud credentials to your apps etc., but standard k8s resources worked pretty well with at most some extra annotations to for example link a Service of type LoadBalancer with specific pre-allocated IP.