Feedback on proposal



I am writing to formalize a proposal to extend Helm 3 in a backward compatible manner to allow passing derived values to subcharts without exposing them in `values.yaml`. I wrote this an issue on github, 8576, and opened a PR with a minimal implementation the proposal, 8580. I consider this a major feature, and as such I am opening this topic here to gather your thoughts.

I am willing to drive this, but I will need some guidance.