Allow for nested widgets

It would be great if we could include widgets inside widgets. This would be most useful for creating single select or multiple choice "sections"

For example:
"Main door" (Widget 1)
"Select one of the following options" (Content 1)
"Video Door Bell" (Widget 2, multi-choice with min 0)

• Video Door Bell (item 1)
• - - 1 year license (optional add-on 1)
• - - 3 year license (optional add-on 2)

"Video Door Bell" (Widget 3, multi-choice with min 0)

• Security Cameras (item 2)
• - - Outdoor mount (required add-on 1)
• - - 1 year license (optional add-on 3)
• - - 3 year license (optional add-on 4)

I can't use bundles here because then I wouldn't be able to have optional add-ons. This is the best case scenario, if I needed additional items that would require the user to select all options within the widget. I also cannot enforce single-choice rules. With nested widgets I could have one widget with single select rules and the other two widgets within that widget, much more dynamic and useful