[grantlmiller]

The pattern of Helm template + Kustomize is operationalized with Ship: https://github.com/replicatedhq/ship plus some other functionality to automate pull requests from upstream updates.

[captn3m0]

Isn't it a native usecase as well? This is linked from the kustomize website as a valid usecase: https://testingclouds.wordpress.com/2018/07/20/844/

(Title = Customizing Upstream Helm Charts with Kustomize)