Right now middleware constructs values from "questions.yaml" and assumes that as the only source of values for a chart relaese. This works but it also means that chart devs have to move fields to questions.yaml which they do not want to be modified by the user and possibly not even shown to the user just so that they would be included in "values" when helm install/upgrade happens.

Reading a separate values.yaml file helps to tackle such values and chart creators can just set configuration here which they don't want user to modify.