Rico's note for documentation

When to use strong or light dialogs:

• Strong dialogs ask for data collection.
• Light dialogs ask for quick input but do not severely interrupt the user.

When to use simple or complex dialogs:

• Simple dialogs to collect only few data points.
• Complex dialogs to collect larger amounts of data.

The existing Magnolia 5 UI page (https://documentation.magnolia-cms.com/display/DOCS62/Dialog+types) can serve as an inspiration.