1. What is the general goal of the feature?
I would like to read back critical metadata to the user for QA. In particular, I'm (ab)using the General Settings > ... > Username to capture the recorder of a submission - my enumerators and devices rotate daily, but within one day, each enumerator records many records on the same device. Proof-reading the Username is critical and could be done in the first form of the day (a specific survey start form).
A new widget in ODK Build for question type "Note" as seen in https://docs.getodk.org/form-question-types/#note-widget could be used to read back critical info if it could interpolate XPath. ODK Build would probably have to add some help text to point users to the docs for XPath (/data/username) or XLSForm values (${username}).
Alternatively, a field (e.g. text, read only) could interpolate ${username} or (/data/username) in the label or help text or in the default value. I believe that works as a "dynamic default" (https://docs.getodk.org/form-logic/#dynamic-defaults) in XLSForms, but not sure whether XForms supports it.
2. What are some example use cases for this feature?
Include a note to read back critical form data or device metadata for QA by the enumerator.
In my case, I'm using the Username to guess who collected the record. Related discussion: Hello, ${username}! Make sure to update General Settings > ... > Username to your full name.
Hello, ${username}! Make sure to update General Settings > ... > Username to your full name.
3. What can you contribute to making this feature a reality?
Beta testing.