Super cool to see these sorts of tools. They're great for learning the kube API.
For production-y things however, some meta-config language that allows deterministic templateing would be a huge improvement. It allows you to make sweeping/uniform infrastructure changes from a single library or tool change.
Kubecfg is a good example of the basics one could implement [0] although it's examples aren't as fully fledged and organized as they could be.
[0] - https://github.com/bitnami/kubecfg/blob/master/examples/gues...