Finding ways to optimize published forms and maximize use of structured form elements and other features

## Context

Support has noticed that people often miss "preset" form elements (email, phone, address, etc.) and other features such as "add other" or "repeating sets". As a result form builders / administrators may miss out on opportunities to collect better data, leverage validation functions, streamlined translations, etc.

## Opportunity

- We might consider outlining best practices for form design as reference documentation.
- There is an opportunity ahead with the ability to update live forms to improve form design accordingly.
- Support often notices these opportunities when helping users solve other problems, perhaps we can tag/track instances.

No files, tests, or entry points are named. Start by clarifying whether the goal is best-practice documentation, live-form improvements, support tracking, or a combination, then define the owners and acceptance criteria for the selected scope.

Written by the indexing model from the issue text.